Redirect checker, URL. Follow a URL's redirects hop by hop (up to 10) and return every hop's status code and Location, the final URL, total hops, timing and whether it loops. Expands short links (bit.ly, t.co…) to their destination without loading the page. Every hop is checked before it is requested; redirects to private addresses are reported, not followed. Use to unshorten a link, check an HTTPS or www redirect, or debug SEO redirect chains.