The source code of each Content Document contains metadata that describes its content
Metadata is information contained in the source code that allows it to be described or provided with information about it. This rule concerns the description metadata which, as its name suggests, allows you to describe the page.
Objectives
Allow search and indexing tools to extract information about page content.
Improve the presentation of search results to users.
Improve the consideration of content by search engines and indexing tools.
Implementation
Enter the tag meta name="description" content="", or failing that a specific element having the same function, with a description of the content of the page or site.
Control
In the source code of each page examined
Check the presence of the tag <meta name="description" content="" /> or an equivalent using, for example, browser development tools.
Check that the text of this tag actually describes, in a specific or more generic way, the content of the page.