Tools & Wizards About Us
education.ted.com screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

education.ted.com

Lessons Worth Sharing | TED-Ed

Page Load Speed

1.4 sec in total

First Response

35 ms

Resources Loaded

1.2 sec

Page Rendered

196 ms

education.ted.com screenshot

About Website

Click here to check amazing Ed Ucation TED content for United States. Otherwise, check out these important facts you probably never knew about education.ted.com

TED-Ed celebrates the ideas of teachers and students around the world. Discover hundreds of animated lessons, create customized lessons, and share your big ideas.

Visit education.ted.com

Key Findings

We analyzed Education.ted.com page load time and found that the first response time was 35 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

education.ted.com performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

9/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

26/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value710 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value9.0 s

33/100

10%

Network Requests Diagram

education.ted.com

35 ms

ed.ted.com

89 ms

application-c7bec0112aaaec89c6323e92b7dce1c9.css

77 ms

application_2-c49f0e13c1379ebe3dce1c3b7b727f5e.css

38 ms

application_3-4cd7a21ccfa966ab14ee6410164be0de.css

67 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Education.ted.com, 60% (33 requests) were made to Teded.tedcdn.com and 5% (3 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (543 ms) relates to the external source Teded.tedcdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (57%)

Content Size

2.1 MB

After Optimization

909.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Education.ted.com main page is 2.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Javascripts take 942.4 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 39.7 kB

  • Original 53.6 kB
  • After minification 46.7 kB
  • After compression 13.9 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 6.9 kB, which is 13% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 39.7 kB or 74% of the original size.

Image Optimization

-7%

Potential reduce by 39.3 kB

  • Original 545.9 kB
  • After minification 506.6 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Ed Ucation TED images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 646.6 kB

  • Original 942.4 kB
  • After minification 942.3 kB
  • After compression 295.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 646.6 kB or 69% of the original size.

CSS Optimization

-84%

Potential reduce by 505.4 kB

  • Original 599.0 kB
  • After minification 598.6 kB
  • After compression 93.6 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Education.ted.com needs all CSS files to be minified and compressed as it can save up to 505.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (32%)

Requests Now

47

After Optimization

32

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ed Ucation TED. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

education.ted.com

education.ted.com

35 ms

ed.ted.com

ed.ted.com

89 ms

application-c7bec0112aaaec89c6323e92b7dce1c9.css

application-c7bec0112aaaec89c6323e92b7dce1c9.css

77 ms

application_2-c49f0e13c1379ebe3dce1c3b7b727f5e.css

application_2-c49f0e13c1379ebe3dce1c3b7b727f5e.css

38 ms

application_3-4cd7a21ccfa966ab14ee6410164be0de.css

application_3-4cd7a21ccfa966ab14ee6410164be0de.css

67 ms

_responsive-3ce3e1a4425ae43c8416fac9aead8ef5.css

_responsive-3ce3e1a4425ae43c8416fac9aead8ef5.css

29 ms

modernizr-dd44540e5c5bce29f921d555e3c3fe95.js

modernizr-dd44540e5c5bce29f921d555e3c3fe95.js

31 ms

application-2eec73b5a74ebf43e543d2c68889fdfb.js

application-2eec73b5a74ebf43e543d2c68889fdfb.js

167 ms

all.js

all.js

248 ms

widgets.js

widgets.js

338 ms

top-splash-f0cf96ee5cc4aadde3cdc4754075c02d.png

top-splash-f0cf96ee5cc4aadde3cdc4754075c02d.png

308 ms

magnifying-glass-11a7a3b8881e9843ceb9c3cf98c02c23.png

magnifying-glass-11a7a3b8881e9843ceb9c3cf98c02c23.png

308 ms

icons-sc36f34d110-a3f3d5dfd7fba0f20f99e4af363dfe16.png

icons-sc36f34d110-a3f3d5dfd7fba0f20f99e4af363dfe16.png

309 ms

icon_sprite-54bd1587ef6ab20a747cc5c4a968a0d1.png

icon_sprite-54bd1587ef6ab20a747cc5c4a968a0d1.png

309 ms

featured_info_panel_background-3af298d499a54577d8af52c39bec3d43.png

featured_info_panel_background-3af298d499a54577d8af52c39bec3d43.png

306 ms

grid_cell_corner_featured-b2aca9b95eac183acc520648b265065b.png

grid_cell_corner_featured-b2aca9b95eac183acc520648b265065b.png

305 ms

1511_09_A_Bharathula_Ashwini_MetallicGlass_TEDEdthumb.jpg

1511_09_A_Bharathula_Ashwini_MetallicGlass_TEDEdthumb.jpg

461 ms

critical_290x460b.jpg

critical_290x460b.jpg

463 ms

xray.jpg

xray.jpg

462 ms

long32.jpg

long32.jpg

462 ms

sparta.jpg

sparta.jpg

462 ms

1511_04_A_Tortorello_Jennifer_LouisXIV_TEDEdthumb.jpg

1511_04_A_Tortorello_Jennifer_LouisXIV_TEDEdthumb.jpg

461 ms

frame02_v.jpg

frame02_v.jpg

533 ms

1510_01_A_Gans_Murry_Insects_TEDEdthumb.jpg

1510_01_A_Gans_Murry_Insects_TEDEdthumb.jpg

543 ms

1512_06_A_Abbott_Derek_FrogRiddle_TEDEdthumb.jpg

1512_06_A_Abbott_Derek_FrogRiddle_TEDEdthumb.jpg

505 ms

art.jpg

art.jpg

507 ms

view_lessons-bcb79b4fd7af486b44514ce7324991b5.png

view_lessons-bcb79b4fd7af486b44514ce7324991b5.png

361 ms

view_lessons_background-3ca23e7221e5e13387fde26c86e1e5df.png

view_lessons_background-3ca23e7221e5e13387fde26c86e1e5df.png

325 ms

stay-updated-66120e59c27d9b3c405758b6afa2b029.png

stay-updated-66120e59c27d9b3c405758b6afa2b029.png

363 ms

hn-045-n-1f19c943321dbb41ba1c3e06a59613eb.woff

hn-045-n-1f19c943321dbb41ba1c3e06a59613eb.woff

358 ms

hn-055-n-7c70b1bd8cf90e8aae58cb30c102a361.woff

hn-055-n-7c70b1bd8cf90e8aae58cb30c102a361.woff

356 ms

hn-075-n-b71d8462e47fdb33060e8f9a356aec08.woff

hn-075-n-b71d8462e47fdb33060e8f9a356aec08.woff

356 ms

hn-085-n-0ef3cb2b9887246574c9d33f6236bbed.woff

hn-085-n-0ef3cb2b9887246574c9d33f6236bbed.woff

357 ms

ted-ed-0afd67185eaeac772fe7eb7122d8e810.svg

ted-ed-0afd67185eaeac772fe7eb7122d8e810.svg

202 ms

fontawesome-webfont-3620f1cfe4e62ab1542e6ffd636f7ced.woff

fontawesome-webfont-3620f1cfe4e62ab1542e6ffd636f7ced.woff

218 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

216 ms

ted-ed-icons.svg

ted-ed-icons.svg

217 ms

analytics.js

analytics.js

125 ms

beacon.js

beacon.js

124 ms

iframe_api

iframe_api

202 ms

267 ms

xd_arbiter.php

xd_arbiter.php

57 ms

xd_arbiter.php

xd_arbiter.php

150 ms

button.0308b81ff1714e446f674b5b9793f2cd.js

button.0308b81ff1714e446f674b5b9793f2cd.js

193 ms

collect

collect

47 ms

www-widgetapi.js

www-widgetapi.js

46 ms

follow_button.b9740740e0bcf9b0657c5b11bd4388da.en.html

follow_button.b9740740e0bcf9b0657c5b11bd4388da.en.html

54 ms

nr-885.min.js

nr-885.min.js

32 ms

ping

ping

97 ms

info.json

info.json

93 ms

516102e2a5

516102e2a5

45 ms

like.php

like.php

131 ms

jot

jot

90 ms

qeKvIRsJabD.js

qeKvIRsJabD.js

40 ms

LVx-xkvaJ0b.png

LVx-xkvaJ0b.png

32 ms

Accessibility Review

education.ted.com accessibility score

84

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not have valid values

High

ARIA IDs are not unique

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best Practices

education.ted.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

education.ted.com SEO score

97

Search Engine Optimization Advices

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Education.ted.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Education.ted.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

education.ted.com

Open Graph data is detected on the main page of Ed Ucation TED. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: