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Eco-Design Web Development

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Notion 32

Review/assessment.

Target skills

Review of the main concepts presented in the notion

In order to revise this grain, choose the answer that best fits the question on web performance optimisation

Web performance is defined as the speed at which a web page downloads and displays in the user's browser.

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According to Google: 47% of visitors will abandon your website if it takes more than 3 seconds to download.

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According to research conducted by Google, "53% of visitors will abandon your website if it takes more than 3 seconds to download".

The performance of a website depends solely on its type of use.

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The performance of a website depends on a number of factors such as
-those related to the physical server.
The physical server is a device, similar to a computer without a screen, on which the website is hosted. It is important that it has sufficient bandwidth and network port speed to allow optimal download times when sending web pages.
-Web server aspects.
The web server enables the processing of the request and delivery of the web page content to the end users on the internet.

Web performance optimization consists of two essential variables. Server side performance and client side performance.

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Client-side web performance is the information that the client sees at the web browser level.

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The only two elements to take into account in order to optimize client-side performance are the implementation of a CDN and the use of JPEG images rather than WebP formats.

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The elements to take into account in order to optimize client-side performance are the following
-Set up a CDN (Content Delivery Network).
This device allows local redistribution of server content and caches content that does not require constant updating.

-Bundle files - "Bundle and minify".
It is highly recommended to group files in order to reduce the number of files when downloading. Note that it is also important to reduce the file size by using minification techniques in order to optimize the content.

-Use WebP (Web Picture) images rather than JPEG (Joint Photographic Experts Group), PNG (Portable Network Graphics), etc.
The WebP compression format reduces the size of an image. In addition, it is lighter and the download time is reduced.

Server-side web performance is the time it takes the server to execute a request.

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Dareboost is Google's free tool for measuring the loading speed of a web page.

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This tool analyzes the performance of your website and those of your competitors.
To learn more about this concept, please refer to the grain 04-N5-31