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udemy.in

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Free website and domain report on udemy.in

Last Updated: 12th November, 2022 Update Now
Overview

Snoop Summary for udemy.in

This is a free and comprehensive report about udemy.in. Udemy.in is hosted in Bedford, England in United Kingdom on a server with an IP address of 217.19.248.132, where GBP is the local currency and the local language is English. If udemy.in was to be sold it would possibly be worth $587 USD (based on the daily revenue potential of the website over a 24 month period). Udemy.in is somewhat popular with an estimated 278 daily unique visitors. This report was last updated 12th November, 2022.

About udemy.in

Site Preview: udemy.in udemy.in
Title:
Description:
Keywords and Tags: education, reference
Related Terms: udemy, udemy 100, udemy com, udemy instructor, udemy login, udemy python
Fav Icon:
Age:
Domain Created:
Domain Updated:
Domain Expires:
Review

Snoop Score

1/5

Valuation

$587 USD
Note: All valuation figures are estimates.

Popularity

Low
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 5,054,887
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 0
Moz Page Authority: 0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 278
Monthly Visitors: 8,448
Yearly Visitors: 101,307
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $1 USD
Monthly Revenue: $24 USD
Yearly Revenue: $289 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: udemy.in 8
Domain Name: udemy 5
Extension (TLD): in 2

Page Speed Analysis

Average Load Time:
Load Time Comparison:

PageSpeed Insights

Avg. (All Categories) 81
Performance 79
Accessibility 92
Best Practices 83
SEO 83
PWA 67
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.udemy.com/
Updated: 12th November, 2022

2.15 seconds
First Contentful Paint (FCP)
67%
19%
14%

0.01 seconds
First Input Delay (FID)
97%
2%
1%

Simulate loading on desktop
79

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for udemy.in. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.7 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 2.4 s
The time taken for the page to become fully interactive.
Cumulative Layout Shift — 0.057
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

First Meaningful Paint — 0.8 s
The time taken for the primary content of the page to be rendered.
Network Requests
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200
Preflight
https://use.fontawesome.com/releases/v4.7.0/css/font-awesome-css.min.css
h2
5353.9670007303
5378.2710004598
7598
30344
200
text/css
Stylesheet
https://www.udemy.com/api-2.0/ecl?client_key=js&client_version=523da17
h2
5364.9059999734
5415.6670002267
754
0
200
text/plain
XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
1261.589
20.867
1299.99
6.756
1321.882
5.888
1344.02
6.795
1350.825
19.518
1379.097
77.112
1465.486
10.486
1491.209
8.726
1507.847
13.294
1521.332
8.202
1529.544
88.341
1617.985
5.043
1623.245
17.568
1643.124
12.619
1655.913
10.124
1666.066
64.114
1731.624
324.193
2055.872
16.985
2072.882
51.118
2130.267
6.132
2141.923
23.541
2165.951
10.043
2181.217
26.882
2213.767
22.091
2255.037
72.894
2328.141
5.945
2336.838
31.442
2368.716
46.495
2415.456
8.577
2424.959
26.051
2451.026
31.517
2484.881
12.796
2497.953
20.634
2518.68
9.276
2527.978
25.785
2553.934
26.397
2580.517
24.052
2604.602
21.167
2625.857
30.734
2656.612
29.335
2686.353
33.553
2724.269
27.884
2759.217
6
2780.712
14.794
2797.935
11.589
2813.083
14.632
2830.703
10.561
2841.81
5.215
2847.059
78.182
2926.104
42.153
2970.244
352.882
3323.172
8.384
3333.672
5.005
3341.145
20.445
3369.804
11.607
3382.43
11.984
3399.731
31.693
3432.257
12.29
3449.706
10.053
3533.102
12.734
3558.001
9.356
3567.389
12.443
3583.318
12.506
3595.861
25.716
3621.864
32.145
3656
8.655
3669.264
52.956
3722.258
9.261
3732.817
9.966
3749.893
10.334
3765.505
29.139
3794.709
24.415
3819.196
7.364
3826.739
8.936
3835.73
10.216
4083.069
8.88
4099.829
8.72
4116.479
11.211
4133.037
9.162
4166.413
9.416
4182.963
8.909
4199.814
16.182
4216.672
10.369
4333.061
10.212
4349.969
8.795
4366.375
10.269
4383.095
9.494
4399.81
10.356
4449.91
8.807
4465.059
17.7
4482.772
7.594
4490.443
9.722
4500.21
8.715
4533.023
13.98
4883.111
10.208
4899.719
10.547
4916.96
12.223
4933.058
8.643
4966.335
8.376
4983.054
7.681
4999.666
17.576
5017.268
10.591
5133.113
9.712
5149.729
9.478
5163.812
7.132
5170.956
25.879
5196.848
69.188
5266.615
8.021
5276.379
8.608
5289.637
10.456
5300.261
39.647
5340.755
10.64
5366.467
8.445
5383.015
58.473
5533.01
15.153
5683.044
8.837
5699.653
10.765
5716.415
11.85
5732.961
10.085
5766.314
10.099
5782.979
11.373
5799.63
15.655
5817.03
10.188
5932.973
10.086
5949.673
11.674
5966.36
10.799
5982.981
9.646
5999.666
9.565
6049.628
9.594
6066.541
9.675
6083.017
13.85
6099.688
11.078
6483.15
9.887
6499.869
10.541
6516.441
11.806
6533.009
11.82
6555.669
11.953
6567.646
8.652
6582.947
9.468
6599.718
15.562
6616.216
9.193
6732.974
8.528
6750.665
8.367
6766.414
9.615
6783.146
11.242
6799.622
9.581
6849.595
9.186
6866.685
10.106
6882.929
10.992
6899.641
9.295
7282.887
8.991
7299.754
8.695
7316.365
10.862
7332.925
9.708
7367.058
9.259
7382.985
10.102
7399.486
18.622
7418.13
12.381
7533.722
11.999
7557.262
12.224
7569.502
9.09
7582.935
9.597
7599.581
9.889
7649.74
9.223
7666.383
11.577
7683.554
10.352
7699.537
10.882
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Other

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Udemy.in should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Properly size images
Images can slow down the page's load time. Udemy.in should consider serving more appropriate-sized images.
Defer offscreen images — Potential savings of 49 KiB
Time to Interactive can be slowed down by resources on the page. Udemy.in should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://img-b.udemycdn.com/notices/web_banner/slide_1_image_udlite/745e103d-c4ff-48b4-9d4d-9862b7858db8.jpg
44242
40775
https://cdn.cookielaw.org/logos/c7d0d27d-e055-4572-8927-d3c994df5f60/b85c39fb-f5de-428d-92c6-cbf7cd8c6b9c/525608f6-6540-490c-8724-59ec595c678a/udemy-logo.png
7382
7382
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
2323
2323
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Udemy.in should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Udemy.in should consider minifying JS files.
Reduce unused CSS — Potential savings of 49 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Udemy.in should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} ...
19865
19585
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0f5f66ac081246a21cfc.css
22230
19524
.ab-pause-scrolling,body.ab-pause-scrolling,html.ab-pause-scrolling{overflow:hidden; ... } ...
11221
11221
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Udemy.in should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 14 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
7306
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
6584
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
42
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 1,970 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://img-b.udemycdn.com/notices/web_banner/slide_2_image_udlite/de684548-5cdf-4f02-8024-d7284acdd2fd.png
698022
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
168945
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js
125724
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
111531
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
93757
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
75807
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
62661
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
50121
https://img-b.udemycdn.com/notices/web_banner/slide_1_image_udlite/745e103d-c4ff-48b4-9d4d-9862b7858db8.jpg
45041
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/c9f378a6-cc26-4ea1-97ae-0678c63c575a/en.json
41713
Avoid chaining critical requests — 5 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Udemy.in should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 26 user timings
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
UD-_udlite_entry_main
Measure
1614.212
509.538
UD-_lohp_app
Measure
1625.895
93.382
UD-_common_desktop_app
Measure
1729.597
392.212
UD-_common_desktop_app
Measure
1729.597
392.295
UD-_common_desktop_app
Measure
1729.597
392.349
UD-_common_desktop_app
Measure
1729.597
392.393
UD-load-third-party-js
Measure
2123.522
3022.366
UD-load-third-party-js-request-idle-callback
Measure
5123.842
19.22
UD-__udlite_entry_main-start
Mark
1614.247
UD-__lohp_app-start
Mark
1625.911
UD-__lohp_app-end
Mark
1719.295
UD-__common_desktop_app-start
Mark
1719.886
UD-__common_desktop_app-start
Mark
1729.082
UD-__common_desktop_app-start
Mark
1729.385
UD-__common_desktop_app-start
Mark
1729.606
UD-__common_desktop_app-end
Mark
2121.826
UD-__common_desktop_app-end
Mark
2121.898
UD-__common_desktop_app-end
Mark
2121.951
UD-__common_desktop_app-end
Mark
2122
UD-_load-third-party-js-start
Mark
2123.539
UD-__udlite_entry_main-end
Mark
2123.758
UD-udlite.first-unit-loaded
Mark
3445.242
UD-_load-third-party-js-request-idle-callback-start
Mark
5123.865
UD-_load-third-party-js-request-idle-callback-end
Mark
5143.097
UD-_load-third-party-js-end
Mark
5145.905
UD-BrazeWebPush.sdk-initialized
Mark
5323.506
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 73 requests • 1,970 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
73
2016816
Image
16
847934
Script
19
800841
Other
27
178575
Font
3
96448
Stylesheet
7
52467
Document
1
40551
Media
0
0
Third-party
32
1126387
Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
182365
0
SHOW DETAILS
75807
0
SHOW DETAILS
8791
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
div.carousel-billboard--carousel-item--cP_Bu > div.billboard-banner--billboard--3GBV3 > div.billboard-banner--image-container--2LVH- > img
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 3 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Subscribe to the best of Udemy With Personal Plan, you get access to 6,000 of …
0.049040221051091
Skip to content Categories Search for anything Udemy Business Teach on Udemy Lo…
0.0081357048748353
Next
6.0336769985115E-5
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 5 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
2296
176
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
1991
162
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
1821
88
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
1927
64
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js
2153
51
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of udemy.in on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Speed Index — 1.9 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 290 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 1.4 s
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 180 ms
Users could experience a delay when interacting with the page.

Other

Reduce unused JavaScript — Potential savings of 290 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js
125724
72589
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
168945
68235
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
93757
51642
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
111531
41127
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
62661
33456
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
75807
29559
Avoid multiple page redirects — Potential savings of 380 ms
Redirects can cause additional delays before the page can begin loading. Udemy.in should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://udemy.in/
190
http://www.udemy.com/
190
https://www.udemy.com/
0
Reduce JavaScript execution time — 1.7 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.udemy.com/
1234.283
27.888
4.498
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
629.32099999999
302.16599999999
10.418
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
591.09
444.676
1.671
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
360.388
328.501
2.059
Unattributable
152.54
29.357
0
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js
143.276
129.243
10.341
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
142.783
127.391
4.171
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
99.583
94.599
3.275
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
85.559
58.495
9.223
https://cdn.sift.com/s.js
76.386
66.769
1.239
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
50.926
44.584
3.829
Minimize main-thread work — 3.6 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
1682.9450000001
Other
670.969
Style & Layout
611.469
Rendering
430.074
Garbage Collection
129.056
Script Parsing & Compilation
64.93
Parse HTML & CSS
38.456

Other

Reduce initial server response time — Root document took 880 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.udemy.com/
879.796
Serve static assets with an efficient cache policy — 33 resources found
Udemy.in can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://use.fontawesome.com/7f85a56ba4.css
1800000
1193
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
14400000
16535
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
86400000
93757
https://cdn.sift.com/s.js
86400000
21255
https://cdn.cookielaw.org/logos/c7d0d27d-e055-4572-8927-d3c994df5f60/b85c39fb-f5de-428d-92c6-cbf7cd8c6b9c/525608f6-6540-490c-8724-59ec595c678a/udemy-logo.png
86400000
8207
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
86400000
8030
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/OtAutoBlock.js
86400000
2857
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
86400000
2323
https://img-b.udemycdn.com/notices/web_banner/slide_2_image_udlite/de684548-5cdf-4f02-8024-d7284acdd2fd.png
2592000000
698022
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
2592000000
168945
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js
2592000000
125724
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
2592000000
111531
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
2592000000
62661
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
2592000000
50121
https://img-b.udemycdn.com/notices/web_banner/slide_1_image_udlite/745e103d-c4ff-48b4-9d4d-9862b7858db8.jpg
2592000000
45041
https://www.udemy.com/staticx/udemy/fonts/Udemy-Sans-Bold-v1.woff2
2592000000
36873
https://www.udemy.com/staticx/udemy/fonts/Udemy-Sans-Regular-v1.woff2
2592000000
36556
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
2592000000
25484
https://www.udemy.com/staticx/udemy/fonts/SuisseWorks-Bold-v1.woff2
2592000000
23019
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0f5f66ac081246a21cfc.css
2592000000
22230
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js
2592000000
18399
https://www.udemy.com/staticx/udemy/js/webpack/udlite-quick-view-box.fb692f0bbe303a1ab64e.js
2592000000
11252
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.7d02c9c4d938519b7328.css
2592000000
10186
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-server-side.2b09c7e533de4880dba6.css
2592000000
6090
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js
2592000000
3648
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.bf0ab6d8928249466071.css
2592000000
3595
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js
2592000000
1965
https://www.udemy.com/staticx/udemy/images/v7/logo-udemy-inverted.svg
2592000000
1620
https://www.udemy.com/staticx/udemy/js/webpack/udlite-quick-view-box.e72bda42a669d11d9ac5.css
2592000000
1575
https://www.udemy.com/staticx/udemy/images/v7/logo-udemy.svg
2592000000
1568
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-server-side.c3d6fc45e31609c54c5b.js
2592000000
1096
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js
2592000000
932
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js
2592000000
842
Avoid an excessive DOM size — 2,206 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
2206
Maximum DOM Depth
$84.99
25
Maximum Child Elements
Development Web Development Data Science Mobile Development Programming Languag…
36
Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
SHOW DETAILS
SHOW DETAILS
92

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of udemy.in. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Udemy.in may provide assistance to deaf or hearing-impaired users with captions on videos.

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
83

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that udemy.in should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
React
core-js
core-js-global@3.22.7; core-js-pure@3.21.1
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://udemy.in/
Allowed
http://www.udemy.com/
Allowed

Audits

Uses deprecated APIs — 2 warnings found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
`window.webkitStorageInfo` is deprecated. Please use `navigator.webkitTemporaryStorage` or `navigator.webkitPersistentStorage` instead.
SHOW DETAILS
...
SHOW DETAILS
Missing source maps for large first-party JavaScript
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js.map
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js.map
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-udlite-app.1fde2d5610c950a237bb.js.map
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js.map
https://www.udemy.com/staticx/udemy/js/webpack/udlite-quick-view-box.fb692f0bbe303a1ab64e.js
https://www.udemy.com/staticx/udemy/js/webpack/udlite-quick-view-box.fb692f0bbe303a1ab64e.js.map
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js.map
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js.map
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js.map
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js.map
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js.map
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js.map
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-server-side.c3d6fc45e31609c54c5b.js
https://www.udemy.com/staticx/udemy/js/webpack/common-desktop-server-side.c3d6fc45e31609c54c5b.js.map
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js.map
83

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for udemy.in. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of udemy.in on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 2 links found
Make use of descriptive link text to assist search engines in understanding the content.
Document doesn't have a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
67

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of udemy.in. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of udemy.in on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 74
Performance 38
Accessibility 96
Best Practices 83
SEO 84
PWA 70
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.udemy.com/
Updated: 12th November, 2022

2.79 seconds
First Contentful Paint (FCP)
41%
39%
20%

0.07 seconds
First Input Delay (FID)
80%
12%
8%

Simulate loading on mobile
38

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for udemy.in. This includes details about optimizing page load times which can result in a better user experience.

Other

Properly size images
Images can slow down the page's load time. Udemy.in should consider serving more appropriate-sized images.
Defer offscreen images — Potential savings of 9 KiB
Time to Interactive can be slowed down by resources on the page. Udemy.in should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://cdn.cookielaw.org/logos/c7d0d27d-e055-4572-8927-d3c994df5f60/b85c39fb-f5de-428d-92c6-cbf7cd8c6b9c/525608f6-6540-490c-8724-59ec595c678a/udemy-logo.png
7382
7382
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
2323
2323
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Udemy.in should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Udemy.in should consider minifying JS files.
Reduce unused CSS — Potential savings of 50 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Udemy.in should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0f5f66ac081246a21cfc.css
22230
20251
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} ...
19865
19571
.ab-pause-scrolling,body.ab-pause-scrolling,html.ab-pause-scrolling{overflow:hidden; ... } ...
11221
11221
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Udemy.in should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 1,846 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://img-b.udemycdn.com/notices/web_banner/slide_2_image_responsive_udlite/878b88fd-6aa9-4a9d-a648-861ea31d8fc7.png
740231
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
168945
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
111531
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
93757
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
75807
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
62661
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
56541
https://img-b.udemycdn.com/notices/web_banner/slide_1_image_responsive_udlite/523c75b8-ef4d-468b-b9cf-e83ddbae06db.jpg
55693
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
50121
https://www.udemy.com/
43209
Avoid chaining critical requests — 4 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Udemy.in should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 26 user timings
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
UD-_udlite_entry_main
Measure
1439.617
485.639
UD-_lohp_app
Measure
1457.368
86.983
UD-_common_mobile_app
Measure
1547.826
374.829
UD-_common_mobile_app
Measure
1547.826
374.994
UD-_common_mobile_app
Measure
1547.826
375.063
UD-_common_mobile_app
Measure
1547.826
375.113
UD-load-third-party-js
Measure
1925.094
3010.615
UD-load-third-party-js-request-idle-callback
Measure
4925.395
7.001
UD-__udlite_entry_main-start
Mark
1439.663
UD-__lohp_app-start
Mark
1457.383
UD-__lohp_app-end
Mark
1544.369
UD-__common_mobile_app-start
Mark
1544.855
UD-__common_mobile_app-start
Mark
1547.502
UD-__common_mobile_app-start
Mark
1547.681
UD-__common_mobile_app-start
Mark
1547.83
UD-__common_mobile_app-end
Mark
1922.691
UD-__common_mobile_app-end
Mark
1922.826
UD-__common_mobile_app-end
Mark
1922.892
UD-__common_mobile_app-end
Mark
1922.945
UD-_load-third-party-js-start
Mark
1925.101
UD-__udlite_entry_main-end
Mark
1925.269
UD-udlite.first-unit-loaded
Mark
2526.501
UD-_load-third-party-js-request-idle-callback-start
Mark
4925.415
UD-_load-third-party-js-request-idle-callback-end
Mark
4932.418
UD-_load-third-party-js-end
Mark
4935.727
UD-BrazeWebPush.sdk-initialized
Mark
5067.442
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 59 requests • 1,846 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
59
1889997
Image
9
870210
Script
17
719209
Other
24
116123
Font
3
96448
Stylesheet
5
44798
Document
1
43209
Media
0
0
Third-party
25
1148674
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 0 elements found
The element which was identified as the Largest Contentful Paint.
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 2 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Subscribe to the best of Udemy With Personal Plan, you get access to 6,000 of …
0.11901995779454
Open side drawer
0.02282574533046
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 20 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
8434
660
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
11404
578
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
7379
300
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
7890
283
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
10290
226
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
8227
207
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/OtAutoBlock.js
2746
195
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
11249
155
https://www.udemy.com/
2135
154
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
9990
137
https://cdn.sift.com/s.js
9295
132
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
10996
97
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
9094
92
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
10894
91
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
7290
89
Unattributable
4928
85
https://www.udemy.com/
1890
76
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
10818
76
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
11176
73
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
9218
70
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of udemy.in on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://udemy.in/
http/1.1
0
325.80700004473
498
0
301
text/html
http://www.udemy.com/
http/1.1
326.15000009537
364.47100015357
641
0
301
text/plain
https://www.udemy.com/
h2
364.77800016291
1073.6040000338
43209
352061
200
text/html
Document
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/OtAutoBlock.js
h2
1089.8480000906
1111.7300000042
2857
5390
200
application/x-javascript
Script
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
h2
1089.9740001187
1120.1110000256
8030
21748
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/fonts/Udemy-Sans-Regular-v1.woff2
h2
1090.1059999596
1124.0040000994
36556
35928
200
application/font-woff
Font
https://www.udemy.com/staticx/udemy/fonts/Udemy-Sans-Bold-v1.woff2
h2
1090.2740000747
1121.9590001274
36873
36245
200
application/font-woff
Font
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.bf0ab6d8928249466071.css
h2
1090.5700000003
1160.9000000171
3595
15035
200
text/css
Stylesheet
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.7d02c9c4d938519b7328.css
h2
1090.7960000914
1122.9530000128
10186
43871
200
text/css
Stylesheet
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js
h2
1159.5630000811
1214.3300001044
842
152
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0f5f66ac081246a21cfc.css
h2
1091.0239999648
1133.7360001635
22230
145259
200
text/css
Stylesheet
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js
h2
1162.5360001344
1195.1830000617
932
362
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
h2
1091.4000000339
1131.2299999408
25484
108643
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
h2
1091.5759999771
1139.8140001111
56541
259154
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
h2
1091.6949999519
1143.0320001673
111531
515987
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/images/v7/logo-udemy.svg
h2
1166.8020000216
1199.9739999883
1567
1891
200
image/svg+xml
Image
https://img-b.udemycdn.com/notices/web_banner/slide_1_image_responsive_udlite/523c75b8-ef4d-468b-b9cf-e83ddbae06db.jpg
h2
1166.9940000866
1224.2650000844
55693
54894
200
binary/octet-stream
Image
https://www.udemy.com/staticx/udemy/images/v7/logo-udemy-inverted.svg
h2
1167.1289999504
1210.1080000866
1620
2034
200
image/svg+xml
Image
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js
h2
1167.2809999436
1206.9320001174
18399
119407
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
h2
1167.3749999609
1227.8700000606
168945
603613
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js
h2
1167.5670000259
1200.5170001648
1965
3115
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
h2
1167.7419999614
1211.278000148
50121
197662
200
application/javascript
Script
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/25ab360c-347c-4a85-8b93-1e0326234b75.json
h2
1127.163000172
1158.9399999939
2687
4795
200
application/x-javascript
XHR
https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location
h2
1162.3350000009
1209.2630001716
465
75
200
application/json
XHR
data
1206.2590001151
1206.3370000105
0
69
200
image/svg+xml
Image
data
1207.3280001059
1207.4039999861
0
66
200
image/svg+xml
Image
data
1208.6559999734
1208.7159999646
0
68
200
image/svg+xml
Image
data
1209.7559999675
1209.8290000577
0
67
200
image/svg+xml
Image
data
1210.7560001314
1210.8170001302
0
66
200
image/svg+xml
Image
data
1211.7040001322
1211.7790000048
0
66
200
image/svg+xml
Image
data
1212.744000135
1212.8100001719
0
68
200
image/svg+xml
Image
data
1213.7180001009
1213.7850001454
0
68
200
image/svg+xml
Image
data
1214.7520000581
1214.8190001026
0
67
200
image/svg+xml
Image
data
1215.8089999575
1215.8880000934
0
68
200
image/svg+xml
Image
https://www.udemy.com/staticx/udemy/fonts/SuisseWorks-Bold-v1.woff2
h2
1247.9189999867
1288.4840001352
23019
22396
200
application/font-woff
Font
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
h2
1310.7620000374
1338.039000053
93757
389442
200
application/javascript
Script
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
h2
1441.1700000055
1472.5190000609
16434
39178
200
application/javascript
Script
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/c9f378a6-cc26-4ea1-97ae-0678c63c575a/en.json
h2
1483.7170001119
1519.8520000558
41713
215372
200
application/x-javascript
Fetch
https://www.udemy.com/api/2022-03/graphql/
h2
1704.9970000517
1793.7940000556
897
34
200
application/json
Fetch
https://www.udemy.com/api-2.0/discovery-units/bestseller/?apply_campaign_filter=False&context=home&fft=skills_hub_top_new_beginner&fl=lbl&is_content_rankable=False&label_id=7380&member_of=skills_hub_top_new_beginner&safe_for_public_caching=True&sos=pl&source_page=logged_out_homepage&skip_price=true&source_page=logged_out_homepage&locale=en_US&currency=usd&navigation_locale=en_US
h2
1878.2099999953
2292.0729999896
11206
55734
200
application/json
XHR
https://www.udemy.com/api-2.0/pricing/?course_ids=1187016,1362070,1565838,1708340,1754098,1921420,2196488,2776760,3142166,437398&fields[pricing_result]=price,discount_price,list_price,price_detail,price_serve_tracking_id
h2
1952.5940001477
2218.0000001099
3690
4625
200
application/json
XHR
https://www.udemy.com/api-2.0/pricing/?course_ids=533682,567828,625204,756150,762616,793796,851712,903744&fields[pricing_result]=price,discount_price,list_price,price_detail,price_serve_tracking_id
h2
1953.1690001022
2211.838999996
3606
3702
200
application/json
XHR
https://www.udemy.com/api-2.0/notices/me/?type=smart_bar&limit=1&locale=en_US&currency=usd&user=false
h2
1970.4330000095
2183.5529999807
3492
602
200
application/json
XHR
https://www.udemy.com/api-2.0/contexts/me/?header=True&footer=True
h2
1971.315999981
2093.7320000958
3837
2044
200
application/json
XHR
https://cdn.cookielaw.org/scripttemplates/202209.2.0/assets/otFlat.json
h2
2000.4549999721
2026.4100001659
3880
13129
200
application/json
Fetch
https://cdn.cookielaw.org/scripttemplates/202209.2.0/assets/v2/otPcTab.json
h2
2000.9709999431
2029.513000045
14145
63197
200
application/json
Fetch
https://cdn.cookielaw.org/scripttemplates/202209.2.0/assets/otCommonStyles.css
h2
2001.5050000511
2031.7669999786
4301
21083
200
text/css
Fetch
https://img-b.udemycdn.com/notices/web_banner/slide_2_image_responsive_udlite/878b88fd-6aa9-4a9d-a648-861ea31d8fc7.png
h2
2055.5950000416
2159.0070000384
740231
739361
200
binary/octet-stream
Image
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/pica.js
h2
2078.0780001078
2100.655999966
8209
19124
200
application/javascript
Other
https://cdn.cookielaw.org/logos/c7d0d27d-e055-4572-8927-d3c994df5f60/b85c39fb-f5de-428d-92c6-cbf7cd8c6b9c/525608f6-6540-490c-8724-59ec595c678a/udemy-logo.png
h2
2229.3010000139
2253.6959999707
8207
7382
200
image/png
Image
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
h2
2230.1670000888
2251.4440000523
2323
2998
200
image/svg+xml
Image
data
2467.7620001603
2467.9420001339
0
68
200
image/svg+xml
Image
https://img-c.udemycdn.com/course/480x270/394676_ce3d_5.jpg
h2
2499.4600000791
2523.5429999884
26994
26485
200
image/jpeg
Image
https://img-c.udemycdn.com/course/480x270/396876_cc92_7.jpg
h2
2502.5290001649
2529.0400001686
33169
32660
200
image/jpeg
Image
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
h2
2512.527000159
2696.2280001026
75807
171666
200
application/javascript
Script
https://www.udemy.com/api-2.0/ecl?client_key=js&client_version=523da17
h2
2532.7830000315
2571.9520000275
754
0
200
text/plain
XHR
https://www.udemy.com/api-2.0/pricing/?course_ids=394676,396876,405878,449532,482754,519554,535622,543600,558096,622414&fields[pricing_result]=price,discount_price,list_price,price_detail,price_serve_tracking_id
h2
2624.497000128
2862.5479999464
3854
4608
200
application/json
XHR
https://www.udemy.com/api-2.0/pricing/?course_ids=629302&fields[pricing_result]=price,discount_price,list_price,price_detail,price_serve_tracking_id
h2
2625.5200000014
2798.7999999896
3474
487
200
application/json
XHR
https://collector-pxzhh9f9x0.px-cloud.net/api/v2/collector
h2
2744.8960000183
2776.0209999979
726
355
200
application/json
XHR
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/cv/result/7691af264f6a0736
h2
3051.4760001097
3095.3389999922
551
2
200
text/plain
XHR
https://collector-pxzhh9f9x0.px-cloud.net/api/v2/collector
h2
3775.8190000895
3800.3640000243
1060
689
200
application/json
XHR
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
h2
4933.9990001172
4979.3620000128
62661
238047
200
application/javascript
Script
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js
h2
4934.8400000017
4970.5370001029
3648
6651
200
application/javascript
Script
https://cdn.sift.com/s.js
h2
4936.2560000736
4949.1300000809
21255
62947
200
application/javascript
Script
https://hexagon-analytics.com/images/440812.gif?bk=78b4b13f0a&tm=65&r=788174460&v=105&cs=UTF-8&h=www.udemy.com&l=en-US&S=fc8dd5b53fa4136a8e16ed90df4f88b1&uu=244bc60baae47243e5e791f4c77c70e&t=Online%20Courses%20-%20Learn%20Anything%2C%20On%20Your%20Schedule%20%7C%20Udemy&u=https%3A%2F%2Fwww.udemy.com%2F&ua=Mozilla%2F5.0%20(Linux%3B%20Android%207.0%3B%20Moto%20G%20(4))%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F98.0.4695.0%20Mobile%20Safari%2F537.36%20Chrome-Lighthouse&nm=0&mh=d41d8cd98f00b204e9800998ecf8427e&np=0&ph=d41d8cd98f00b204e9800998ecf8427e&sh=640&sw=360&cd=24&p=Linux%20x86_64&to=480&d=60&ce=true&tp=1&ol=true&pr=Gecko&ps=20030107&vd=Google%20Inc.&vs=&hc=8&je=false&ss=true&ls=true&in=true&db=false&tl=false&tr=false&ts=false&tb=false&ab=false&cf=308b5b2b47d82e1699c1de870815932b&z=z
h2
5028.8370000198
5053.133000154
406
43
200
image/gif
Image
https://use.fontawesome.com/7f85a56ba4.css
h2
5062.8090000246
5084.007000085
1189
1033
200
text/css
Stylesheet
https://sdk.iad-03.braze.com/api/v3/data/
h2
5105.4780001286
5227.7880001348
1080
614
201
application/json
XHR
https://sdk.iad-03.braze.com/api/v3/data/
h2
5086.7930001114
5105.1090001129
603
0
200
Preflight
https://use.fontawesome.com/releases/v4.7.0/css/font-awesome-css.min.css
h2
5088.6300001293
5128.0859999824
7598
30344
200
text/css
Stylesheet
https://www.udemy.com/api-2.0/ecl?client_key=js&client_version=523da17
h2
5283.9200000744
5319.574000081
754
0
200
text/plain
XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
1077.603
18.969
1170.132
11.376
1186.806
97.589
1284.988
20.355
1319.565
12.329
1337.783
29.161
1372.389
70.644
1445.829
8.794
1454.728
13.436
1471.604
13.026
1484.811
11.721
1496.55
51.7
1549.852
330.196
1880.113
22.324
1902.482
23.044
1936.624
7.906
1954.976
17.44
1972.955
5.093
1981.556
21.189
2002.826
38.631
2043.241
9.37
2062.882
12.014
2080.326
150.181
2230.561
7.757
2238.429
45.586
2288.566
7.699
2296.529
11.817
2308.359
15.149
2324.4
27.43
2356.847
113.118
2470.005
22.06
2501.59
9.835
2620.352
6.435
2708.865
38.063
2746.947
6.128
2763.521
288.967
3061.384
10.572
3072.481
7.251
3079.83
14.74
3095.054
24.321
3123.855
15.292
3141.133
5.551
3758.611
18.287
4956.178
7.472
4963.664
66.209
5046.271
34.18
5149.065
76.785
5298.473
5.36
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

First Contentful Paint — 2.3 s
The time taken for the first image or text on the page to be rendered.
Cumulative Layout Shift — 0.142
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

First Meaningful Paint — 2.6 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 150 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Udemy.in should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.bf0ab6d8928249466071.css
3595
150
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0f5f66ac081246a21cfc.css
22230
150
Serve images in next-gen formats — Potential savings of 32 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://img-c.udemycdn.com/course/480x270/396876_cc92_7.jpg
32660
18083.05
https://img-c.udemycdn.com/course/480x270/394676_ce3d_5.jpg
26485
14536.1
Avoid serving legacy JavaScript to modern browsers — Potential savings of 14 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
7306
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
6584
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
42

Metrics

Time to Interactive — 11.1 s
The time taken for the page to become fully interactive.
Speed Index — 6.2 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 2,260 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 4.2 s
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 660 ms
Users could experience a delay when interacting with the page.

Other

Reduce unused JavaScript — Potential savings of 253 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
168945
69914
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
93757
51642
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
111531
43614
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
62661
33456
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
56541
30489
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
75807
29559
Reduce initial server response time — Root document took 710 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.udemy.com/
709.82
Avoid multiple page redirects — Potential savings of 1,260 ms
Redirects can cause additional delays before the page can begin loading. Udemy.in should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://udemy.in/
630
http://www.udemy.com/
630
https://www.udemy.com/
0
Serve static assets with an efficient cache policy — 29 resources found
Udemy.in can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://use.fontawesome.com/7f85a56ba4.css
1800000
1189
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
14400000
16434
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
86400000
93757
https://cdn.sift.com/s.js
86400000
21255
https://cdn.cookielaw.org/logos/c7d0d27d-e055-4572-8927-d3c994df5f60/b85c39fb-f5de-428d-92c6-cbf7cd8c6b9c/525608f6-6540-490c-8724-59ec595c678a/udemy-logo.png
86400000
8207
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
86400000
8030
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/OtAutoBlock.js
86400000
2857
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
86400000
2323
https://img-b.udemycdn.com/notices/web_banner/slide_2_image_responsive_udlite/878b88fd-6aa9-4a9d-a648-861ea31d8fc7.png
2592000000
740231
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
2592000000
168945
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
2592000000
111531
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
2592000000
62661
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
2592000000
56541
https://img-b.udemycdn.com/notices/web_banner/slide_1_image_responsive_udlite/523c75b8-ef4d-468b-b9cf-e83ddbae06db.jpg
2592000000
55693
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
2592000000
50121
https://www.udemy.com/staticx/udemy/fonts/Udemy-Sans-Bold-v1.woff2
2592000000
36873
https://www.udemy.com/staticx/udemy/fonts/Udemy-Sans-Regular-v1.woff2
2592000000
36556
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
2592000000
25484
https://www.udemy.com/staticx/udemy/fonts/SuisseWorks-Bold-v1.woff2
2592000000
23019
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0f5f66ac081246a21cfc.css
2592000000
22230
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js
2592000000
18399
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.7d02c9c4d938519b7328.css
2592000000
10186
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js
2592000000
3648
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.bf0ab6d8928249466071.css
2592000000
3595
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js
2592000000
1965
https://www.udemy.com/staticx/udemy/images/v7/logo-udemy-inverted.svg
2592000000
1620
https://www.udemy.com/staticx/udemy/images/v7/logo-udemy.svg
2592000000
1567
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js
2592000000
932
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js
2592000000
842
Avoid an excessive DOM size — 2,602 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
2602
Maximum DOM Depth
$94.99
23
Maximum Child Elements
Development Web Development Data Science Mobile Development Programming Languag…
36
Reduce JavaScript execution time — 5.0 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
2171.244
1787.556
9.692
https://www.udemy.com/
1828.216
110.824
15.408
https://www.udemy.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1668268800
1318.844
1067.188
7.024
https://cdn.cookielaw.org/scripttemplates/202209.2.0/otBannerSdk.js
652.86
202.328
39.976
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
443.216
290.7
24.26
Unattributable
431.792
97.32
0
https://client.perimeterx.net/PXZHh9f9x0/main.min.js
431.684
400
13.708
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
382.992
139.78
36.812
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
306.556
289.196
13.152
https://cdn.sift.com/s.js
294.98
269.848
5.004
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
173.508
150.04
15.088
https://cdn.cookielaw.org/consent/25ab360c-347c-4a85-8b93-1e0326234b75/OtAutoBlock.js
64.216
60.812
0.8
Minimize main-thread work — 8.6 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
4906.18
Style & Layout
1101.78
Other
784.46799999999
Garbage Collection
734.604
Rendering
728.944
Script Parsing & Compilation
234.164
Parse HTML & CSS
148.124
Reduce the impact of third-party code — Third-party code blocked the main thread for 350 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
182365
221.152
SHOW DETAILS
75807
129.4
SHOW DETAILS
8787
0
Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
SHOW DETAILS
SHOW DETAILS
First Contentful Paint (3G) — 4890 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.
96

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of udemy.in. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Udemy.in may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
4.3
4.3
4.3
4.3
4.4
4.5
4.5
4.7
4.6
4.6
4.5
4.6
4.7
4.7
4.6
4.6
4.7
4.7
4.7
4.7
4.5
4.6
4.6
4.8
4.7
4.6

Navigation

`[id]` attributes on active, focusable elements are not unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Failing Elements
What do you want to learn?

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
83

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that udemy.in should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
React
core-js
core-js-global@3.22.7; core-js-pure@3.21.1
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://udemy.in/
Allowed
http://www.udemy.com/
Allowed

Audits

Uses deprecated APIs — 2 warnings found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
`window.webkitStorageInfo` is deprecated. Please use `navigator.webkitTemporaryStorage` or `navigator.webkitPersistentStorage` instead.
SHOW DETAILS
...
SHOW DETAILS
Missing source maps for large first-party JavaScript
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js
https://www.udemy.com/staticx/udemy/js/webpack/udlite-discovery-common.82660c8cd5af21bee704.js.map
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-vendor.8421d83e9c39f21a5e64.js.map
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js
https://www.udemy.com/staticx/udemy/js/webpack/vendors~braze.c6b7709aadd545490ae0.js.map
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js
https://www.udemy.com/staticx/udemy/js/webpack/udlite-common-css.3272fceaffdb7efd0658.js.map
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js
https://www.udemy.com/staticx/udemy/js/webpack/lohp-udlite-app.4b8dbb2fda1d50532048.js.map
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js
https://www.udemy.com/staticx/udemy/js/webpack/lohp-server-side.0a1054c340386d4d9077.js.map
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js
https://www.udemy.com/staticx/udemy/js/webpack/jsi18n-en-us-discovery-udlite-baseline.b8ee94b0e470c7115043.js.map
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline.1f54b689389da42b1df3.js.map
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js
https://www.udemy.com/staticx/udemy/js/webpack/entry-udlite-baseline-manifest.74256543d5590465119d.js.map
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js
https://www.udemy.com/staticx/udemy/js/webpack/common-mobile-udlite-app.29dda4b8c4cddfcbab1c.js.map
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js
https://www.udemy.com/staticx/udemy/js/webpack/braze.5c3e4d9b7b072d3e41c0.js.map
84

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for udemy.in. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of udemy.in on mobile screens.
Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
100.00%
≥ 12px

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Mobile Friendly

Tap targets are not sized appropriately — 81% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
Tap Target Size Overlapping Target
About us
312x27
Contact us
Contact us
312x27
Careers
Careers
312x27
Investors
Investors
312x27
Terms
Terms
312x27
Privacy policy
Privacy policy
312x27
Cookie settings
Cookie settings
312x27
Blog
Blog
312x27
Sitemap
Sitemap
312x27
Get the app
Get the app
312x27
Accessibility statement

Content Best Practices

Links do not have descriptive text — 2 links found
Make use of descriptive link text to assist search engines in understanding the content.
Document doesn't have a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
70

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of udemy.in. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of udemy.in on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 217.19.248.132
Continent: Europe
Country: United Kingdom
United Kingdom Flag
Region: England
City: Bedford
Longitude: -0.4649
Latitude: 52.1073
Currencies: GBP
Languages: English

Web Hosting Provider

Name IP Address
Dedicated Server Hosting
Registration

Domain Registrant

Private Registration: No
Name:
Organization:
Country:
City:
State:
Post Code:
Email:
Phone:
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating:
WOT Trustworthiness:
WOT Child Safety:
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: udemy.com
Issued By: Cloudflare Inc ECC CA-3
Valid From: 28th June, 2022
Valid To: 28th June, 2023
Subject: CN = udemy.com
O = Cloudflare, Inc.
L = San Francisco
S = US
Hash: f34a6905
Issuer: CN = Cloudflare Inc ECC CA-3
O = Cloudflare, Inc.
S = US
Version: 2
Serial Number: 6973737546849986706829251993974684849
Serial Number (Hex): 053F17CE9FAB6BA850D61098992D3CB1
Valid From: 28th June, 2024
Valid To: 28th June, 2024
Signature Algorithm (Short Name): ecdsa-with-SHA256
Signature Algorithm (Long Name): ecdsa-with-SHA256
Authority Key Identifier: keyid:A5:CE:37:EA:EB:B0:75:0E:94:67:88:B4:45:FA:D9:24:10:87:96:1F
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://crl3.digicert.com/CloudflareIncECCCA-3.crl

Full Name:
URI:http://crl4.digicert.com/CloudflareIncECCCA-3.crl
Certificate Policies: Policy: 2.23.140.1.2.2
CPS: http://www.digicert.com/CPS
Authority Information Access: OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/CloudflareIncECCCA-3.crt
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : AD:F7:BE:FA:7C:FF:10:C8:8B:9D:3D:9C:1E:3E:18:6A:
B4:67:29:5D:CF:B1:0C:24:CA:85:86:34:EB:DC:82:8A
Timestamp : Jun 28 02:02:02.134 2022 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:F4:97:23:D8:C8:16:33:66:7F:D6:9D:
0E:E8:16:6C:0F:EE:ED:81:BE:0D:73:CB:FE:29:77:71:
98:35:A5:B4:A5:02:20:53:F5:C6:29:93:76:21:4A:40:
46:42:48:45:CE:46:09:4A:75:37:A8:15:8D:5B:19:6C:
60:8C:36:79:6A:51:9F
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 35:CF:19:1B:BF:B1:6C:57:BF:0F:AD:4C:6D:42:CB:BB:
B6:27:20:26:51:EA:3F:E1:2A:EF:A8:03:C3:3B:D6:4C
Timestamp : Jun 28 02:02:02.085 2022 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:6A:C5:D9:26:5F:A5:81:59:CC:F0:A9:0B:
40:5C:B0:23:76:97:F1:31:C1:EE:A1:44:B3:FE:A6:AC:
68:73:40:F4:02:21:00:CC:F6:1E:31:0A:CB:DD:AD:6D:
14:43:4B:AF:D6:1A:E0:E9:AD:25:43:6B:7F:5D:E1:56:
58:CF:D6:F7:F9:11:EA
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : B3:73:77:07:E1:84:50:F8:63:86:D6:05:A9:DC:11:09:
4A:79:2D:B1:67:0C:0B:87:DC:F0:03:0E:79:36:A5:9A
Timestamp : Jun 28 02:02:02.139 2022 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:23:17:66:F4:32:81:F8:C8:11:F4:DE:D7:
AC:EA:B9:01:DF:D2:5F:62:A9:58:1F:C1:B6:93:46:AC:
12:2A:32:FF:02:20:0F:1E:D0:6B:81:D7:63:0E:71:54:
51:D3:53:A1:BC:97:84:2A:51:2F:FB:E2:66:03:BD:44:
5E:AD:FF:D4:8B:EE
Key Usage: Digital Signature
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:*.udemy.com
DNS:ablink.alerts.udemy.com
DNS:ablink.instructors.udemy.com
DNS:ablink.students.udemy.com
DNS:ablink.udemybusiness.udemy.com
DNS:udemy.com
Technical

DNS Lookup

A Records

Host IP Address Class TTL
udemy.in. 217.19.248.132 IN 900

NS Records

Host Nameserver Class TTL
udemy.in. dns1.idp365.net. IN 21600
udemy.in. dns2.idp365.net. IN 21600
udemy.in. dns3.idp365.net. IN 21600

MX Records

Priority Host Server Class TTL
10 udemy.in. mail.idp365.net. IN 900

SOA Records

Domain Name Primary NS Responsible Email TTL
udemy.in. dns1.idp365.net. hostmaster.idp365.net. 21600

HTTP Response Headers

HTTP-Code: HTTP/1.1 403 Forbidden
Date: 12th November, 2022
Content-Type: text/plain; charset=UTF-8
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: 1st January, 1970
Server: cloudflare
Content-Length: 16
Connection: keep-alive
X-Frame-Options: SAMEORIGIN
Referrer-Policy: same-origin
Set-Cookie: *
X-Content-Type-Options: nosniff
CF-RAY: 7691ad8ccec08cbd-EWR

Whois Lookup

Created:
Changed:
Expires:
Status:
Nameservers: dns1.idp365.net
dns2.idp365.net
dns3.idp365.net
Full Whois:
View Raw Whois

Nameservers

Name IP Address
dns1.idp365.net 188.208.34.10
dns2.idp365.net 93.115.247.10
dns3.idp365.net 92.114.80.10
Related

Subdomains

Similar Sites

Organic Search (US) Competitors

Backlink Competitors

Sites with the same domain name

Domain Valuation Snoop Score
udemy.com
$185,588,528 USD 5/5
udemy.com.br
0/5
udemy.org
0/5
udemy.video
0/5
udemy.ws
0/5

Sites hosted on the same IP address

Domain Valuation Snoop Score
2collab.com
$532 USD 1/5
3dvisionlive.com
$1,939 USD 2/5
achieveglobal.com
0/5
adventurecenter.com
0/5
ameristar.com
$3,002 USD 2/5
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