Status code checker tool was made to help people who want to map URLs of one website to another website. This mostly happens during a website migration where we want to map pages the right way. Here in the website A option you need to put your old website and in website B option your new domain to which you want to compare your old vs new pages. Below you will just paste your old pages from website A and the tool will automatically apply slugs to a new domain and tell you if that page is a 200 status code, 301 redirect or a 404 page in which case you need to apply redirect. After that this status code checker tool will offer you ability to export those status codes in csv file that can be used for 301 redirects.