1.2 sec in total
42 ms
388 ms
742 ms
Visit fastly.kastatic.org now to see the best up-to-date Fastly Kastatic content for Malaysia and also check out these interesting facts you probably never knew about fastly.kastatic.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 fastly.kastatic.orgWe analyzed Fastly.kastatic.org page load time and found that the first response time was 42 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.
fastly.kastatic.org performance score
name
value
score
weighting
Value2.6 s
62/100
10%
Value6.3 s
10/100
25%
Value8.8 s
15/100
10%
Value18,720 ms
0/100
30%
Value0.028
100/100
15%
Value32.3 s
0/100
10%
42 ms
38 ms
86 ms
45 ms
47 ms
Our browser made a total of 61 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Fastly.kastatic.org, 3% (2 requests) were made to Googletagmanager.com and 2% (1 request) were made to Khanacademy.org. The less responsive or slowest element that took the longest time to load (147 ms) relates to the external source Cdn.kastatic.org.
Page size can be reduced by 207.7 kB (9%)
2.3 MB
2.0 MB
In fact, the total size of Fastly.kastatic.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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.0 MB which makes up the majority of the site volume.
Potential reduce by 204.4 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 204.4 kB or 87% of the original size.
Potential reduce by 39 B
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. Fastly Kastatic images are well optimized though.
Potential reduce by 191 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 3.1 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. Fastly.kastatic.org needs all CSS files to be minified and compressed as it can save up to 3.1 kB or 19% of the original size.
Number of requests can be reduced by 19 (36%)
53
34
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Fastly Kastatic. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.
www.khanacademy.org
42 ms
analytics.js
38 ms
gtm.js
86 ms
webpack-dev.297054d8010bce5fb4e6.css
45 ms
student-entry.088b234232eb46986c8c.css
47 ms
header-entry.65c49e11cc8e7522c9a0.css
43 ms
runtime.ddf05d0088a3c012506b.js
66 ms
corelibs.03e18c61f4b9bfd4e159.js
108 ms
moment.fafc84393660fdd16237.js
73 ms
webpack-dev.e97a707766f20190632f.js
67 ms
shared-intl.2dd7de15841b41a51791.js
72 ms
shared.e8537238503aa322580c.js
72 ms
wonder-blocks.2d038dbec21b772854bb.js
105 ms
shared-components.18b082c7d457d3bfd2d9.js
107 ms
j~d6ac60fb.2b157e91bb6bfc11c7ca.js
106 ms
67L4.e18cbe52fecbcec2fbd3.js
106 ms
sat-mission-entry~~417810a9.71a55c278545f72baf50.js
130 ms
topicsa~7eb6fd7e.62c0347c4955ff4d9ae8.js
127 ms
page-pa~367f70e7.dc83f8ba8c95c734930d.js
119 ms
student-entry.600f212ede92a18cc3b8.js
118 ms
header-entry.2c669f486fbca8fe6151.js
120 ms
1zNw.a859171755b687d9ef1d.js
121 ms
app-entry.913367675a4526ac126f.js
122 ms
hero_student_collage_compressed.png
133 ms
left-background.png
62 ms
right-background.png
64 ms
personalized_learning_icon.png
64 ms
trusted_content_icon.png
73 ms
empower_teachers_icon.png
65 ms
graph_collage@2x.png
77 ms
faces_collage@2x.png
79 ms
laptop_collage@2x.png
83 ms
anjali-2.png
74 ms
math-unicorn-donate-collage.png
145 ms
last_chance_collage@2x.png
147 ms
bank-of-america-dark-gray@2x.png
77 ms
college-board-dark-gray@2x.png
81 ms
ann-and-john-doerr-dark-gray@2x.png
79 ms
gates-foundation-dark-gray@2x.png
79 ms
lemann-foundation-dark-gray@2x.png
81 ms
carlos-rodriguez-pastor-dark-gray@2x.png
82 ms
tata-trusts-dark-gray@2x.png
81 ms
valhalla-dark-gray@2x.png
82 ms
att-dark-gray@2x.png
78 ms
google-dark-gray@2x.png
77 ms
novartis-dark-gray@2x.png
78 ms
fastly-dark-gray@2x.png
65 ms
js
55 ms
gm-dark-gray@2x.png
44 ms
adobe-dark-gray@2x.png
45 ms
us-flag.png
45 ms
india-flag.png
37 ms
mexico-flag.png
37 ms
brazil-flag.png
35 ms
LatoLatinExtended-Regular.woff2
2 ms
LatoLatinExtended-Bold.woff2
5 ms
LatoLatinExtended-Black.woff2
5 ms
NotoSerifHebrew-Regular.woff2
5 ms
NotoSerif-Regular.woff2
5 ms
NotoSerifArmenian-Regular.woff2
24 ms
NotoNaskhArabic-Regular.woff2
23 ms
fastly.kastatic.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
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.
fastly.kastatic.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
fastly.kastatic.org SEO score
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 Fastly.kastatic.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 Fastly.kastatic.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.
fastly.kastatic.org
Open Graph data is detected on the main page of Fastly Kastatic. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: