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 5 questions

Less than a minute. Find out how much you really know about Google search.

🕒 ~1 min 🎯 5 questions
★★★ Are sneaky redirects to mobile apps hindering your SEO?
Sneaky redirects that take users to an app when visiting a page through search results are not recommended. Application install banners are preferred....
John Mueller May 15, 2018
★★ Should You Keep the Same URL or Create a 301 Redirect When Updating Content?
When an internet user asked about replacing old content with new content on a website, John Mueller explained that it's better to keep the same URL and change the content of that page rather than redi...
John Mueller May 09, 2018
★★★ Should you really switch your site to HTTPS all at once to prevent traffic loss?
When switching to HTTPS, it is better to make the changes in one step to minimize ranking fluctuations....
John Mueller May 03, 2018
★★★ Should you really use a 302 instead of a 301 for geo-targeted redirects?
For IP-based redirects, using a 302 redirect is preferred over a 301 to avoid unwanted caching by browsers or systems....
John Mueller May 03, 2018
★★★ Do 301 redirects really protect your visibility after changing a URL?
Temporary fluctuations may occur after a change in URL structure, even if everything is correctly redirected via 301s. Visibility should eventually stabilize, generally without long-term negative impa...
John Mueller May 01, 2018
★★★ Should You Really Avoid Redirects in Hreflang Tags at All Costs?
John Mueller reminded us on Twitter that URLs specified in Hreflang tags should not be subject to 301, 302 or any other type of redirect. In other words, they must return a 200 code and not be redirec...
John Mueller Apr 23, 2018
★★★ Is it true that migrating a massive site to JavaScript could delay your indexing by several days?
For very large or rapidly changing sites, migrating to a JavaScript-based setup can slow down indexing because the page rendering may be deferred for several days....
John Mueller Apr 13, 2018
★★ Why does Google still show the old domain after a year of 301 redirection?
After redirecting an old domain to a new one for over a year, if Google still displays the old domain, it may be because you explicitly searched for the old domain. This does not mean that the redirec...
John Mueller Apr 06, 2018
★★★ How does Google truly select the canonical URL for your pages?
Google selects a canonical URL from the various available variants based on signals such as redirects, internal links, sitemaps, and other criteria. Ensure that your signals clearly point to the desir...
John Mueller Apr 05, 2018
★★★ Hreflang and x-default: How do you truly manage the default version of a multilingual site?
For multilingual sites, it's possible to use a specially designed 'x-default' version to serve as the default version. Ensure that all appropriate versions are marked for correct user redirection....
John Mueller Apr 05, 2018
★★★ How can you redirect multilingual users without harming Google indexing?
When you have multilingual and multi-country variants of the same site, use JavaScript banners to redirect users to the appropriate version without affecting Google's indexing. This prevents Google fr...
John Mueller Apr 05, 2018
★★ Should you truly worry about redirect chains for Google crawling?
Googlebot follows redirect chains up to five steps. It is advisable to reduce the number of redirects by uniting these chains, although multiple redirects generally do not pose an issue for indexing....
John Mueller Apr 05, 2018
★★★ Do redirect pages really harm your site's ranking?
If a page is too similar to others and primarily serves to redirect traffic, it may be considered a doorway page, which is frowned upon by Google....
John Mueller Apr 03, 2018
★★★ Is it really necessary to redirect all your URLs when changing your CMS?
When changing a URL structure, such as when switching CMS, it is crucial to redirect the old URLs to the new ones. It takes time for Google to reindex, so it is better to make these changes when your ...
John Mueller Mar 28, 2018
★★★ Should You Really Worry About 404 Errors in Search Console?
John Mueller released a new "SEO Snippets" video in which he answers a question about 404 errors that may appear in Search Console and correspond to an old version of a website. John explains that the...
John Mueller Mar 26, 2018
★★★ Should you really maintain redirects for URLs that still generate traffic?
If you notice traffic or links pointing to outdated URLs, it's recommended to redirect those links to the new URLs or restore the redirects if the traffic or links are significant....
John Mueller Mar 16, 2018
★★★ Do geographic redirects harm your site's indexing?
Google will treat the redirected version of content as the main version if a geographic redirect is in place. It is recommended not to use geographic redirects but rather banners to direct users to th...
John Mueller Mar 09, 2018
★★ Is it true that you can use multiple H1 tags without harming your SEO?
Google does not necessarily understand semantic HTML5 elements but accepts multiple H1 tags on a single page without confusion....
John Mueller Mar 09, 2018
★★★ Does Google really speed up its crawl after massive redirects?
Google adjusts its crawl speed when it detects significant structural changes, such as massive redirects, without requiring special practices for old URLs....
John Mueller Mar 08, 2018
★★★ Should you choose 301, 404, or 410 redirects during a relaunch to protect your SEO?
During a relaunch, it is advisable to use 301 redirects to preserve SEO signals. The differences between 404 and 410 are minor, but 410 can be slightly faster for deindexing....
John Mueller Mar 08, 2018
🔔

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.