Broken links can damage your site's SEO and frustrate your visitors. When you discover a broken link on your site, it's important to fix it quickly.
What is a broken link
A broken link is a link that goes to a non-existent page. Broken links typically return a 404 error page, indicating that the page can't be found. Most broken links come from a typo on the web page with the link, or from web pages that have been renamed, moved, or deleted.
Types of broken links
How to fix broken links