The HTTP status codes that matter for SEO
- 200: the page responds fine. It's what the final address should return.
- 301 and 308: permanent redirect. Google moves the authority to the new address.
- 302 and 307: temporary redirect. Use it only if you'll go back to the old address.
- 404 and 410: not found. Google drops it from its results.
- 5xx: server error. If it lasts, Google ranks the page lower and crawls your site less.
When to check your redirects
- When you move the site to https: everything on http has to lead, with a single 301, to its https version.
- When you change domains or URL structure: each old page to its new equivalent, not all of them to the home page.
- When Search Console reports “Page with redirect” or redirect loops.
Moving to a new host? Read how to change hosting without losing SEO, and test your robots.txt once the site is live.