A redirect checker is a tool that allows you to check if a URL redirects to another URL, and what type of redirect is being used (e.g. 301, 302, etc.). The tool can help you verify that your website's redirects are set up correctly and can also help you diagnose problems with redirects, such as redirect chains or loops.
If you'd like to use a redirect checker, there are many online tools available for free, Mojha's Redirect Checker is free and easy to use tool. Simply enter the URL that you want to check and the tool will show you the final URL that the original URL redirects to, along with the type of redirect being used.