301redirects

A 301 redirect is an HTTP status code that indicates the requested resource has permanently moved to a new URL. When a client requests the old URL, the server responds with a 301 status and the new location. Browsers automatically navigate to the new URL, and search engines treat the move as permanent, updating their indexes and directing users to the destination page.

In terms of search engine optimization, a 301 redirect is the preferred mechanism for permanently relocated content. It signals that the old URL should be replaced in search results by the new one and that most of the link equity and rankings should be passed to the destination URL. It is distinct from 302 or other temporary redirects, which are treated as temporary moves and typically do not transfer authority in the same way.

Implementation and best practices include planning per site migration or URL restructuring, using 301s for domain changes, folder reorganizations, or content consolidation. Avoid redirect chains and loops, as multiple hops can dilute crawl efficiency and user experience. After implementing 301 redirects, update internal links, canonical tags when appropriate, and submit updated sitemaps. Test redirects with curl or browser tools and monitor crawl errors and analytics to ensure smooth transfer of traffic.

Technical considerations include the expectation that most link equity is passed to the new URL, though transfer may not be immediate or complete in all cases. Be mindful of changing user expectations and ensure the destination page provides equivalent or improved content. Periodically audit redirects to remove obsolete 301s and prevent long-term maintenance issues.