Report Summary

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    Best Practices

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Page Load Speed

783 ms in total

First Response

49 ms

Resources Loaded

497 ms

Page Rendered

237 ms screenshot

About Website

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Key Findings

We analyzed page load time and found that the first response time was 49 ms and then it took 734 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics performance score


Network Requests Diagram

49 ms


139 ms


49 ms


98 ms

100 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, 60% (3 requests) were made to and 20% (1 request) were made to The less responsive or slowest element that took the longest time to load (139 ms) relates to the external source

Page Optimization Overview & Recommendations

Page size can be reduced by 88.8 kB (52%)

Content Size

171.5 kB

After Optimization

82.7 kB

In fact, the total size of main page is 171.5 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 144.4 kB which makes up the majority of the site volume.

HTML Optimization


Potential reduce by 88.8 kB

  • Original 144.4 kB
  • After minification 144.4 kB
  • After compression 55.7 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 88.8 kB or 61% of the original size.

JavaScript Optimization


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


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. has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now


After Optimization


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

SEO Factors SEO score


Language and Encoding

  • Language Detected


  • Language Claimed


  • Encoding


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

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