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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★★★ Should you really eliminate all internal redirects from your site?
Google suggests linking directly to the destination final URL rather than through redirects. This enhances speed for users and optimizes crawling....
John Mueller Apr 09, 2020
★★★ Why isn't a 301 redirect enough to remove content from Google's index?
A 301 redirect is not enough to remove content from Google’s search results. Similarly, a directive in the robots.txt file will not block indexing....
Daniel Waisberg Apr 07, 2020
★★★ How do conflicting canonical signals sabotage your indexing?
Avoid conflicting canonical signals, such as a 301 redirect pointing in the opposite direction of a rel=canonical tag. Maintain clear signals to achieve desired results....
Allan Scott Mar 31, 2020
★★★ What happens when your canonical signals contradict each other?
It is crucial to maintain unambiguous canonical signals. Instances where a 301 redirect contradicts a rel=canonical tag can lead the system to seek out another representative URL, which is undesirable...
Google Mar 31, 2020
★★★ Why are redirects essential during a website redesign?
When redesigning your site, use redirects to indicate the new locations of your pages. This makes it easier for Google to identify changes and maintain the appropriate signals....
Allan Scott Mar 31, 2020
★★★ Why are redirects absolutely essential during a website redesign?
Google strongly recommends using redirects when redesigning a site to indicate the new pages that correspond to the old ones. This allows for the correct transfer of SEO signals to the new URLs....
Google Mar 31, 2020
★★ How can you effectively manage 404 errors in a single-page application?
To handle 404 errors in single-page applications (SPAs), using a 'noindex' meta tag or redirecting to a real external 404 page are acceptable and equivalent solutions....
Martin Splitt Mar 26, 2020
★★★ Why does Google crawl PDFs so infrequently, and how can you manage their migration?
Google does not frequently crawl PDF files because they rarely change. During a domain migration, if there are clear redirects, Google can process this quickly, but if there are too many variations, i...
John Mueller Mar 26, 2020
★★★ Can you safely combine redirects and canonical tags without risking your SEO?
It is possible to use redirects to URLs that have a canonical tag pointing to different content. Google will try to understand the intentions and merge this information to decide which URL to display ...
John Mueller Mar 26, 2020
★★ Why do PDFs slow down a site migration?
Google may take longer to process PDF files during a site migration, especially if they are large. This is because PDFs are updated less often and, therefore, crawled less frequently....
John Mueller Mar 26, 2020
★★★ Should you really separate domain migration from structural redesign?
During a significant website redesign, it's advisable to proceed gradually to better monitor and adjust any potential issues. First, change the domain before adjusting the content and URL structure....
John Mueller Mar 26, 2020
★★★ How Long Can You Really Use a 302 Redirect Without Hurting Your SEO?
Fabrice Canel (Bing) indicated on Twitter that it's possible to use 302 redirects if the temporary nature doesn't exceed 2 days. Beyond this limit, it's better to use 301 redirects. Frédéric Dubut (Bi...
Google Mar 23, 2020
★★★ Can you really migrate a multilingual site without implementing hreflang right away?
During a migration where you have legacy and new sites running in parallel, using geographical signals and subdirectory structures may be temporarily sufficient without hreflang until all new sites ar...
John Mueller Mar 17, 2020
★★★ How long should you really keep a redirect after a domain migration?
Keep redirects from old domains for at least a year after migration to properly pass authority, and ideally, for as long as possible to prevent spam issues on old domain names....
John Mueller Mar 06, 2020
★★★ Does Google really track all your chained redirects?
Google follows up to 5 redirects at a time during a crawl session. It's best to limit redirect chains to speed up access to your content....
John Mueller Mar 06, 2020
★★★ How Many Redirect Chains Can You Have Before Hurting Your SEO Performance?
John Mueller indicated on Reddit that redirect chains should be avoided, particularly more than 5 successive redirects on a website, as Googlebot will not follow them beyond this number....
John Mueller Jan 27, 2020
★★★ How Does Google's Machine Learning Really Determine Canonicalization Criteria Weights?
The same John Mueller explained during a webmaster hangout an example of how Google can use machine learning algorithms: "So, for example, we use machine learning for canonicalization. We have all the...
John Mueller Dec 23, 2019
★★★ How Does Google Adjust Its Crawl Rate During a Server Migration?
John Mueller published a new #AskGoogleWebmasters video where he explains that the only thing that changes when you move a site from one server to another is the speed at which GoogleBot crawls that c...
John Mueller Sep 30, 2019
★★★ How Does Google Actually Choose Which Canonical URL to Index When Multiple Versions Exist?
John Mueller, in a new video from his #AskGoogleWebmasters channel, explains how Google selects canonical URLs. Indeed, in many cases, the search engine identifies a page offering given content (or si...
John Mueller Sep 09, 2019
★★★ Are JavaScript Redirects Really Safe for Your SEO?
Third episode of the #AskGoogleWebmasters videos, which this time addresses the question of JavaScript redirects. John Mueller explains that Googlebot understands JS redirects well during its crawls a...
John Mueller Aug 12, 2019
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