301 Redirect

Q: What is the difference between a 301 and a 302 redirect?

The 301 is permanent and transfers ranking signals as well as authority to the new address. The 302 is temporary and signals that the old URL will return soon, which is why it passes on hardly any authority. For definitive moves you always use the 301.

Q: How long should a 301 redirect stay in place?

Ideally permanently. As long as old links exist somewhere or search engines know the old URL, the redirect is needed. If you remove it too early, error pages arise and you lose traffic as well as transferred authority. When in doubt, leave it in place.

A 301 redirect is a server-level instruction that permanently sends visitors and crawlers from an old URL to a new one. The status code 301 means "moved permanently" — it tells browsers, search engines, and AI crawlers alike that the old address is retired for good and that any authority attached to it belongs at the new one. That distinguishes it from a 302, which only says "check back here later."

Why the 301 redirect matters

Sites change constantly: pages get renamed, sections merge, domains migrate. Without a redirect in place, anyone who follows the old link lands on a 404, and you lose both the visitor and whatever ranking signal was attached to that URL. A 301 forwards people automatically and, for search engines, carries over most of the accumulated authority — the backlinks and trust built up over time — to the new address. Skip this step across a large migration and you can watch organic traffic fall off a cliff, then spend months rebuilding rankings you already had.

How a 301 redirect works

The redirect fires before the page ever loads. A request for the old URL hits your server, which responds with status code 301 and the new address instead of any content; browsers and crawlers follow that instruction and load the new page in its place. You can set this up through server configuration (an .htaccess rule, for instance), through your CMS's built-in redirect settings, or through a plugin. The part that's easy to get wrong is the target: redirect each old URL to its actual replacement page, not to the homepage as a catch-all. A precise, content-matched mapping is what preserves the authority and gives visitors the page they were actually looking for.

Common mistakes with redirects

The most common failure is a redirect chain — URL A sends to B, B sends to C, C sends to D. Each extra hop adds load time and dilutes the signal passed along; always point straight to the final destination. A second mistake is reaching for a 302 when the move is permanent: a 302 passes on little to no authority, since it tells crawlers the old URL is still the real one. Bulk-redirecting every retired page to the homepage is another trap — search engines frequently treat that pattern the same as a 404 and pass nothing forward. Redirect loops, where two URLs point at each other, make pages unreachable outright. After any large site change, run a crawler over your redirects to confirm each one resolves directly and correctly.

Relevance to AI recommendations and GEO

AI crawlers such as GPTBot depend on the same thing search engine crawlers do: a working URL to fetch. If a page you're cited for moves and the old address returns a 404, the crawler can't find the source, and that citation or brand mention can quietly drop out of AI-generated answers. A correct 301 keeps both search and AI crawlers landing on the current page after a rebuild or rename. It's worth being clear about what this does and doesn't buy you: Google has stated plainly that no special markup, schema, or AI-specific file is needed for AI Overviews or AI Mode, and a 301 redirect is ordinary technical hygiene, not an AI-visibility trick. What it protects is more basic — making sure the content that earned a citation is still reachable when an AI system goes to verify or re-crawl it.

Example

A regional furniture retailer renames its category page from "/sofas-2024" to "/sofas" because the year in the URL has gone stale. Without a redirect, anyone following the old link from a search result, an old newsletter, or another site's article would hit a 404. Instead, the retailer sets up a 301 from the old URL to the new one. Visitors and crawlers now land on the current page automatically, the backlinks and rankings the old URL had earned carry over, and the category keeps showing up in both search results and AI-generated answers without anyone noticing the underlying change.

Common questions

What is the difference between a 301 and a 302 redirect?

A 301 is permanent and passes ranking signals and authority to the new address. A 302 is temporary and tells crawlers the old URL will be back in use, so it passes on little to no authority. Use a 301 whenever the move is final.

How long should a 301 redirect stay in place?

Indefinitely, in most cases. As long as old links exist anywhere on the web or in a search engine's or AI crawler's index, the redirect is still doing work. Remove it too soon and you reintroduce 404s, along with the traffic and authority loss that comes with them. When unsure, leave it running.