GlossaryTechnical SEO
301 redirect
Also called: Permanent redirect
A 301 redirect sends visitors and search engines from an old URL to a new one permanently, and is the standard fix after moving a page.
A 301 redirect is a server instruction that says a page has moved permanently. When someone, or a search engine, requests the old address, they're sent to the new one. It's the usual tool when you change a URL, merge pages, or move a site to a new domain.
Done properly, a 301 lets the new page inherit most of the value of the old one, including links. Google has said redirects pass signals, though some delay is normal. Mistakes are common. Redirect chains, loops, and sending every old page to the homepage all waste value and confuse users.
Practical point: redirect each old URL to the most relevant new page, keep chains to one hop, and update your own internal links to point straight to the new address. Check redirects with a crawler after a migration. Use a 302 only when a move really is temporary.
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