301 checker does 1 thing: it takes a URL and shows you the entire path of redirects that leads to the final destination. It's a simple tool to help SEOs and other digital experts diganiois if redirects are set up correctly.

What is a 301 redirect?
A 301 redirect is the proper way to redirect a page if the URL changes. It tells search engines, like Google, to transfer page authroity to the new final URL.