2 sec in total
105 ms
1.2 sec
632 ms
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Visit ai-class.orgWe analyzed Ai-class.org page load time and found that the first response time was 105 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
ai-class.org performance score
name
value
score
weighting
Value2.4 s
70/100
10%
Value7.6 s
4/100
25%
Value11.8 s
4/100
10%
Value4,270 ms
1/100
30%
Value0.032
100/100
15%
Value22.9 s
1/100
10%
105 ms
390 ms
218 ms
87 ms
86 ms
Our browser made a total of 46 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Ai-class.org, 63% (29 requests) were made to D125fmws0bore1.cloudfront.net and 7% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (440 ms) relates to the external source D125fmws0bore1.cloudfront.net.
Page size can be reduced by 548.6 kB (46%)
1.2 MB
632.2 kB
In fact, the total size of Ai-class.org main page is 1.2 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. 45% of websites need less resources to load. Javascripts take 508.3 kB which makes up the majority of the site volume.
Potential reduce by 28.0 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. This page needs HTML code to be minified as it can gain 5.1 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 28.0 kB or 71% of the original size.
Potential reduce by 0 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. Ai Class images are well optimized though.
Potential reduce by 315.2 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 315.2 kB or 62% of the original size.
Potential reduce by 205.4 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. Ai-class.org needs all CSS files to be minified and compressed as it can save up to 205.4 kB or 84% of the original size.
Number of requests can be reduced by 16 (37%)
43
27
The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ai Class. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.
ai-class.org
105 ms
www.udacity.com
390 ms
analytics.min.js
218 ms
css
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jquery-1.12.2.min.js
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homepage-13d123b06dc8d3cae81aeb9d535f57b4a2802842dd5a534ab50b0e3deeebba19.js
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ai-class.org accessibility score
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
ai-class.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
ai-class.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ai-class.org 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 Ai-class.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.
ai-class.org
Open Graph data is detected on the main page of Ai Class. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: