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pkynzskf

137 ms

allStyles.d859a00721aac294e08d.css

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allStyles.d859a00721aac294e08d.js

128 ms

en.app.c5a2bb22b4eda5296af7.js

130 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that 20% of them (1 request) were addressed to the original Pkynzskf.labs.coursera.org, 60% (3 requests) were made to D3njjcbhbojbot.cloudfront.net and 20% (1 request) were made to Coursera.org. The less responsive or slowest element that took the longest time to load (137 ms) relates to the external source Coursera.org.

Content Size

172.6 kB

After Optimization

82.8 kB

In fact, the total size of Pkynzskf.labs.coursera.org main page is 172.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. HTML takes 145.5 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 89.7 kB

Original 145.5 kB
After minification 145.4 kB
After compression 55.8 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 89.7 kB or 62% of the original size.

JavaScript Optimization

-53%

Potential reduce by 70 B

Original 132 B
After minification 71 B
After compression 62 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 70 B or 53% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

Original 27.0 kB
After minification 27.0 kB
After compression 27.0 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. Pkynzskf.labs.coursera.org has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pkynzskf Labs Coursera. According to our analytics all requests are already optimized.

Language and Encoding

Language Detected

Language Claimed

Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pkynzskf.labs.coursera.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 Pkynzskf.labs.coursera.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.