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.
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★★★ Can ad banners actually harm your site's SEO?
Google generally handles standard ad banners from networks or ad exchanges well. Most of these links go through redirects that search engines cannot crawl, so there is no need to worry about them....
Matt Cutts May 26, 2011
★★★ Should you really use rel=canonical tags across domains or prefer 301 redirects?
Google accepts rel="canonical" tags between different domains. They essentially function like a 301 redirect. However, a 301 redirect is always preferred as all search engines know how to handle it. W...
Google Apr 20, 2011
★★★ Do 301 redirects and rel=canonical tags really transmit the same PageRank?
There is no significant difference in the amount of PageRank transferred between 301 redirects and rel=canonical....
Google Apr 12, 2011
★★★ Should you really prioritize 301 redirects over rel=canonical?
It is generally recommended to use 301 redirects if possible, as they are more widely supported and recognized by search engines, and they also transport the user in their browser....
Google Apr 12, 2011
★★★ Do URL shorteners' 301 redirects really pass PageRank?
Custom URL shorteners that use 301 redirects do pass PageRank to the final destination. They are generally safe for SEO, provided they are well-configured, which is often the case with popular service...
Google Apr 11, 2011
★★★ Why do mixed HTTP codes sabotage your domain migration?
When migrating a domain, ensure that all pages from the old domain return a permanent 301 redirect to the new domain, rather than a mix of redirects and HTTP 200 (OK) responses. Inconsistent responses...
Google Mar 17, 2011
★★★ How long should you really keep your 301 redirects after a domain migration?
Google recommends maintaining 301 redirects for several weeks or a few months when changing domains, to allow Googlebot to recognize that the site has fully migrated. It is crucial to ensure that each...
Google Mar 17, 2011
★★★ Do 301 redirects and 404 errors really influence SEO rankings?
Fixing 404 errors and using 301 redirects when necessary is essential for maintaining the health of a website and ensuring a good user experience, which positively impacts SEO rankings....
Google Dec 18, 2010
★★★ Should you combine 301 redirects and the change of address form during a site migration?
It is advisable to use both the change of address form and 301 redirects when changing a site. While the form indicates a global site relocation, the 301s ensure that each page points to its equivalen...
Google Jul 19, 2010
★★★ Is the GSC address change form just a formality or a powerful tool for authority transfer?
The address change form in Google Webmaster Tools is useful because it clearly indicates at the site level that site A is moving to site B. Unlike 301 redirects that operate at the page level, this fo...
Google Jul 19, 2010
★★★ Should you really redirect your additional domains or exploit them separately?
When you have very similar domains, it's advisable to use a 301 redirect to the main domain to avoid any confusion. If the domains are truly different, it's better to develop them as independent sites...
Google Jun 15, 2010
★★★ Do backlinks to non-canonical URLs really lose their SEO juice?
If external links point to a URL that is not canonical, Google tries to combine the links so that they pass to the canonical URL. Ideally, the site should be structured to avoid duplicate URLs, create...
Google Mar 30, 2010
★★★ Rel=canonical: How does Google really consolidate SEO signals between similar pages?
Google recommends using the rel=canonical tag to indicate the preferred version of a page when there are similar or identical pages, if 301 redirects are not possible, in order to consolidate SEO sign...
Matt Cutts Jan 20, 2010
★★★ Can you actually merge two sites using the Change of Address feature in Search Console?
The 'Change of Address' feature in Google Webmaster Tools is designed to move a site from one domain to another, not to merge multiple sites. To merge sites, it's advised to compile a comprehensive li...
Google Sep 30, 2009
★★★ Does Google really consider rel=canonical cross-domain useless?
The rel=canonical tag allows you to signal to Google the preferred version of a page without redirecting users, unlike a 301 redirect. However, it should only be used to indicate canonicality within t...
Google Sep 15, 2009
★★★ How does a canonical URL truly strengthen your ranking signals?
It is crucial to use a canonical URL to indicate to Google the preferred version of a page. This can be done by structuring links to the canonical URL or by using a 301 redirect or the rel=canonical t...
Google Sep 15, 2009
★★★ Should you really serve the desktop version to Googlebot if you have a mobile site?
It is acceptable to redirect visitors using a mobile browser to a mobile version of the site as long as Googlebot receives the same content as an average desktop user. Ensure that Googlebot is not tre...
Google Sep 03, 2009
★★★ Should you really generate identical HTML during a CMS migration to maintain rankings?
To minimize impacts on rankings during a CMS migration, ensure that the new CMS generates HTML that is nearly identical to the old one to preserve existing rankings....
Google Jun 22, 2009
★★★ Should you really change everything at once during a CMS migration?
When migrating to a new CMS, it is essential not to change everything at once. It is advised to avoid modifying the CMS, URL structure, and layout simultaneously to determine which element has the gre...
Google Jun 22, 2009
★★★ Should you really test a website redesign before going live?
Before undertaking a complete redesign of a website, conduct tests with mockups to see how changes will affect search engine rankings. This helps identify potential issues before a full production rol...
Google Jun 22, 2009
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