What does Google say about SEO? /
Redirects represent a critical technical component of search engine optimization, especially during site migrations, redesigns, or URL structure changes. This category compiles all official Google statements regarding the implementation of various redirect types (301, 302, 307, 308) and their SEO implications. Understanding Google's stance on redirects is vital for preserving page authority and rankings during structural modifications. SEO practitioners will find valuable insights on PageRank transfer, Googlebot processing timeframes, best practices for avoiding redirect chains, and context-specific recommendations (HTTPS migrations, mobile versions, international content). Google has significantly evolved its redirect handling over the years, notably regarding temporary redirects that can now pass ranking signals under certain conditions. This official documentation enables optimization of migration strategies, minimizes organic traffic loss, and ensures smooth transitions during URL changes while adhering to the search engine's technical guidelines. Whether planning a domain migration, implementing HTTPS, or restructuring site architecture, these authoritative declarations provide the foundation for making informed decisions that protect search visibility and maintain hard-earned rankings throughout technical transformations.
Quick SEO Quiz

Test your SEO knowledge in 3 questions

Less than 30 seconds. Find out how much you really know about Google search.

🕒 ~30s 🎯 3 questions 📚 SEO Google
★★★ Why do 404 redirects to the homepage destroy crawl budget?
Redirecting 404s to the homepage (even with a 5-second meta-refresh) is confusing for users and Google. Google treats this as a soft 404 and will continue to crawl more. It’s better to serve a genuine...
John Mueller Jun 23, 2020
★★ Does mobile-first indexing really improve your ranking in Google?
Being migrated to mobile-first indexing brings no ranking or search advantage. It is simply the way Google indexes the site. There is no urgency to force this migration....
John Mueller Jun 23, 2020
★★ Do pop-ups after a 301 redirect really harm your SEO?
Displaying an informative pop-up after a 301 redirect to inform users that they have been redirected does not affect SEO. Google follows the redirect without sending a referrer and likely will never e...
John Mueller Jun 12, 2020
★★★ Is it true that automatic geographic redirections sabotage your Google crawling?
Googlebot crawls mainly from a single location per website, typically the United States. If a site automatically redirects US users to a specific version, Google will think that these pages should be ...
John Mueller Jun 12, 2020
★★ Does Googlebot send an HTTP referrer when crawling your site?
Googlebot does not send an HTTP referrer when crawling, even when following redirects or links. Consequently, pop-ups or conditional messages based on the referrer will never be seen by Google and do ...
John Mueller Jun 12, 2020
★★★ Is the Analytics bounce rate really irrelevant for your SEO?
Google does not consider the Analytics bounce rate as a ranking factor. Redirects to external login systems (Google, Facebook) therefore do not affect SEO, even though they may appear as bounces in th...
John Mueller Jun 12, 2020
★★ Why hasn't your site been migrated to mobile-first indexing yet?
Google has been notifying sites about significant problems detected ahead of the mobile-first indexing migration for quite some time. The remaining unmigrated sites are mainly either sites with no mai...
John Mueller Jun 12, 2020
★★ Should you really abandon geolocated redirections for a regional selection banner?
For sites personalizing content by state or city, Google recommends displaying a banner that allows users to change their version rather than automatically redirecting. This allows Googlebot to index ...
John Mueller Jun 12, 2020
★★★ Is it really necessary to combine both 301 redirections AND canonical tags for an HTTPS migration?
During an HTTP to HTTPS migration, it is essential to implement both 301 redirections AND canonical tags pointing to HTTPS to clearly indicate to Google which version is canonical....
金谷武明 Jun 04, 2020
★★★ Can Google really delay Mobile-First Indexing indefinitely?
The forced migration of all sites to Mobile-First Indexing, initially planned for September 1, 2020, may be postponed. Google is re-evaluating this date due to the COVID context and will communicate a...
Anonyme (金谷武明) Jun 04, 2020
★★★ Why is Google delaying the complete transition to the Mobile-First Index?
The full migration to the Mobile-First Index, initially scheduled for September 1st, may be postponed due to the health situation. Google will announce the final date later....
金谷武明 Jun 04, 2020
★★★ What happens when Google occasionally indexes HTTP instead of HTTPS even after an SSL migration?
If HTTP and HTTPS coexist without redirection or canonical, Google may index the HTTP version instead of HTTPS. To correct this, implement a 301 redirect from HTTP to HTTPS and/or add a rel=canonical ...
Anonyme (金谷武明) Jun 04, 2020
★★ Can a redesign really boost your SEO signals instead of destroying them?
A site migration doesn't always result in a loss of signals. Often, it corrects structural issues and enhances signals. Google needs to reassess these improvements, which takes time, but allows the si...
John Mueller May 29, 2020
★★★ Does a clean 301 redirect really transfer 100% of PageRank without any loss?
A clean, page-by-page 301 redirect, with no remaining content on the old site, transfers all signals (including PageRank) to the new domain. A partial or late redirect (e.g., a year later) forces Goog...
John Mueller May 29, 2020
★★★ How can fixing a failed migration within 48 hours completely change your rankings?
After a problematic migration, identifying and fixing differences as quickly as possible is crucial. The longer you wait, the more Google systems learn about the new site as a different site and adjus...
John Mueller May 29, 2020
★★★ Why does Google sometimes ignore your rel=canonical tag?
Google does not guarantee indexing the URL indicated by rel=canonical. Canonicalization combines multiple signals: redirects, rel canonical, internal and external links, sitemaps, and other factors. I...
John Mueller May 29, 2020
★★ Will Google introduce accelerated validation for your content overhauls in Search Console?
Google is considering extending the validation process for fixes in Search Console (currently limited to technical issues and structured data) to content overhauls. This would trigger expedited re-cra...
John Mueller May 29, 2020
★★★ Why is it never enough for Google to copy content word for word during a migration?
Copying content word for word during a migration (e.g., from WordPress to React) is not enough. Google also analyzes titles, headings, images, design, navigation, and the structure of internal links. ...
John Mueller May 29, 2020
★★ How do you set up hreflang and x-default for geographic 301 redirects without losing indexing?
Redirecting users from one country to a different domain (with a canonical link to the main domain) is possible. Using hreflang with x-default for the redirect page helps Google understand the structu...
John Mueller May 29, 2020
★★ Does Google really treat 301 and 302 redirects differently for SEO?
Google does not make a significant distinction between 301 and 302 redirect codes in terms of SEO handling, although their behavior differs for browsers (cached vs non-cached)....
Martin Splitt May 18, 2020
🔔

Get real-time analysis of the latest Google SEO declarations

Be the first to know every time a new official Google statement drops — with full expert analysis.

No spam. Unsubscribe in one click.