A dead link is a link in a web page pointing to a non-existent content, that is to say, triggering an error when a visitor clicks on it. This type of link is common on the web, especially when it comes to external links pointing to other sites,
This type of link is problematic, firstly because it creates a disappointing user experience and sometimes unscrupulous people make use of these links to spread infections or put inappropriate content (adult, hacking, etc.)..
Finally, a site with too many dead links may result in a deterioration of its SEO, especially if the users behavior shows that the site is not properly maintained.
In order to provide the best user experience possible, it is necessary to detect dead links and fix them: