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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★★ Why are your domain migrations inexplicably killing your visibility?
During frequent domain migrations, it may happen that signals are not transmitted correctly, which affects visibility....
John Mueller Apr 19, 2020
★★★ 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
★★★ 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 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
★★★ 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
★★★ 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 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
★★★ Why do major site migrations always seem to lead to ranking drops?
During major migrations or restructurings, expect significant ranking fluctuations as Google needs to reassess the new structure of the site and its relevance....
John Mueller Feb 18, 2020
★★★ Can redirected interstitials really harm your indexing?
When a redirect is used to display an interstitial, Googlebot only sees the content of that redirect, which can harm the indexing of the actual content on your site....
John Mueller Jan 31, 2020
★★★ Do JavaScript redirects really pass PageRank?
Links that go through JavaScript redirects can pass weight and signals if Googlebot is capable of following them. Otherwise, they are treated as if they do not exist....
John Mueller Jan 31, 2020
★★★ Why does an URL overhaul take longer to index than a domain change?
When you change URLs without moving the site to another domain, Google must relearn the website's structure, which takes longer than a simple domain migration....
John Mueller Jan 31, 2020
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