32.3 sec in total
235 ms
20.3 sec
11.8 sec
Click here to check amazing Khan Academy content for United States. Otherwise, check out these important facts you probably never knew about khanacademy.org
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, wo...
Visit khanacademy.orgWe analyzed Khanacademy.org page load time and found that the first response time was 235 ms and then it took 32.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
khanacademy.org performance score
name
value
score
weighting
Value3.1 s
46/100
10%
Value24.1 s
0/100
25%
Value9.8 s
10/100
10%
Value2,130 ms
6/100
30%
Value1.347
0/100
15%
Value24.1 s
0/100
10%
235 ms
1959 ms
608 ms
1711 ms
560 ms
Our browser made a total of 37 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Khanacademy.org, 78% (29 requests) were made to Cdn.kastatic.org and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (9.8 sec) relates to the external source Connect.facebook.net.
Page size can be reduced by 1.6 MB (69%)
2.3 MB
698.1 kB
In fact, the total size of Khanacademy.org main page is 2.3 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. 50% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 140.0 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 140.0 kB or 82% of the original size.
Potential reduce by 3.3 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. Khan Academy images are well optimized though.
Potential reduce by 907.0 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 907.0 kB or 71% of the original size.
Potential reduce by 528.1 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. Khanacademy.org needs all CSS files to be minified and compressed as it can save up to 528.1 kB or 85% of the original size.
Number of requests can be reduced by 22 (67%)
33
11
The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Khan Academy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and as a result speed up the page load time.
khanacademy.org
235 ms
www.khanacademy.org
1959 ms
analytics.js
608 ms
shared-minimal-package-85d820.css
1711 ms
collect
560 ms
Proxima-Nova-Regular.woff
295 ms
Proxima-Nova-Semibold.woff
426 ms
fbevents.js
880 ms
corelibs-package-1f57d9.js
658 ms
shared-package-b3303e.js
485 ms
user-progress-cache-package-f6caeb.js
658 ms
package-manifest-5ae5df.js
658 ms
shared-styles-package-c71a2a.js
752 ms
button-package-c25bde.js
750 ms
modules-package-69429c.js
750 ms
scroll-utils-package-64b381.js
721 ms
logged-out-homepage-package-3ecad1.js
719 ms
layout-package-80f2ef.js
720 ms
shared-components-package-3f15d2.js
721 ms
signup-link-package-a00d6a.js
817 ms
page-package-a46d5f.js
721 ms
917218295030130
9750 ms
layout-package-80f2ef.js
6682 ms
shared-styles-package-c71a2a.js
6684 ms
signup-link-package-a00d6a.js
6842 ms
shared-components-package-3f15d2.js
6890 ms
page-package-a46d5f.js
6703 ms
v1.js
1105 ms
arithmetic.png-a485a9-128c.png
976 ms
science.png-945e6f-128c.png
942 ms
computer_programming.png-7d38e8-128c.png
943 ms
humanities.jpg-9fb720-128c.jpeg
943 ms
economics.png-23d94c-128c.png
944 ms
sat_reading_writing.png-768adb-128c.png
943 ms
college_careers_more.png-f8fcd8-128c.png
1002 ms
mountains-simple.svg
1189 ms
bH0.js
1689 ms
khanacademy.org accessibility score
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
[aria-hidden="true"] elements contain focusable descendents
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
khanacademy.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
khanacademy.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Khanacademy.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Khanacademy.org 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.
khanacademy.org
Open Graph data is detected on the main page of Khan Academy. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: