301 Redirect

What is a 301 redirect

A 301 redirect is an HTTP status code that tells browsers and search engines that a page has moved permanently to a new URL. When a user or a crawler requests the old address, the server responds with a 301 and forwards the request to the new location automatically. Unlike a temporary redirect, a 301 signals that the change is permanent, which is why search engines transfer most of the old page's ranking signals, including the value of its backlinks, to the destination URL.

301 versus 302 and other redirects

The number matters. A 301 is permanent and consolidates ranking signals on the target. A 302 or 307 is temporary and tells search engines to keep the original URL indexed because the move is not final. A meta refresh and JavaScript redirects are slower and less reliable for SEO. Using a 302 when you meant a 301 is a classic mistake that can prevent link equity from passing and leave the wrong URL in the index. As a rule, if the change is meant to last, use a 301.

Why 301 redirects matter for SEO

Redirects protect the authority you have already earned. When you change a URL, delete a page, merge two articles, or migrate to a new domain, a 301 preserves the backlinks and rankings tied to the old address instead of letting them disappear into a 404 error. They also improve user experience by sending visitors straight to relevant content rather than a dead end, and they help search engines maintain a clean, current map of your site. Good redirect management is central to any site migration or restructure.

How to implement a 301 redirect

Redirects can be set at the server level, for example in an Apache .htaccess file or an Nginx configuration, in a CMS or hosting panel, or through a redirect app or plugin. Whatever the method, always redirect to the most relevant equivalent page, not blindly to the homepage. Point old URLs directly to their final destination to avoid redirect chains, where one redirect leads to another, and redirect loops, where URLs point back to each other. Update internal links and your XML sitemap to reference the new URLs directly.

Common 301 redirect mistakes

Typical problems include long redirect chains that slow crawling and dilute signals, redirecting large numbers of pages to the homepage instead of a relevant match, mixing up 301 and 302, and forgetting to update internal links so they keep hitting redirects. After a migration it is essential to crawl the site and verify that every old URL resolves with a single 301 to a live, indexable page. Tools such as Ahrefs and Semrush surface redirect chains, loops, and pages that still return errors.

301 redirects, migrations and GEO

During a domain change or a large content consolidation, a complete 301 mapping is what keeps your organic traffic intact. The same logic extends to generative engines: answer engines follow redirects and update the source they cite, so a clean redirect strategy ensures that AI systems point to your current, canonical content rather than a broken or outdated URL. Well managed 301 redirects protect both classic rankings and your visibility as a cited source in AI search.