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Cours en ligne de réseaux informatiques (slides, pdf, vidéos)

Page Speed

To Improve!

Your page speed is 78. There are many things you need to do to improve your page speed. Google page speed gives more points to more than sites.

Page Speed Quote

Shining star in the search engine optimization , I think 2019 will be the site of the opening speed .

Avoid Landing Page Redirects

Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

Page Redirects in

Enable Gzip Compression

Gzip Compression is enabled.

Leverage Browser Caching

Your page have 21 cacheable resources. in the HTTP headers for static resources to set an expiration date or a maximum , the browser tells the load previously downloaded resources from local disk rather on the network.

Cache required resources for

The following cacheable resources are as follows


Minify Css

There is/are 4 css file(s) in your page to compress. Files that not compressed, delay page rendering.

Css resources to compress on

Minify CSS for the following resources to reduce their size by 6.1KiB (15% reduction). compressing source, provides 4.6KiB (14% reduction). compressing source, provides 803B (22% reduction). compressing source, provides 544B (18% reduction). compressing source, provides 208B (24% reduction).

Minify Html

There is/are 1 HTML file(s) in your page to compress. Files that not compressed, delay page rendering.

HTML resources to compress on

Minify HTML for the following resources to reduce their size by 1KiB (23% reduction).

Home page compressing source, provides 1KiB (23% reduction).

Minify Javascript

Javascript files are minimized.

Minimize Render Blocking Resources

Your page has 13 render-blocking JavaScript and CSS resources. This causes a delay in rendering your page. Eliminate these resources in above-the-fold content.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Render blocking resources in

Your page has 5 javascript blocking resources. Remove render-blocking javascript files as follows;


Your page has 8 CSS blocking resources. Remove render-blocking Css files as follows;


Optimize Images

There is/are 3 image(s) in your page to compress. Files that not compressed, delay page rendering.

Optimize images for the following resources to reduce their size by 1KiB (38% reduction).

Image Compressing Preview of
1KiB total size reduction

Prioritize Visible Content

You have the above-the-fold content properly prioritized.

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