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.
★★ How long does Google actually remember old URLs after a site migration?
Google's systems can remember old URLs for a very long time after a migration. This isn't a problem as long as the old URLs redirect correctly. You generally cannot erase them from Google's memory; th...
John Mueller Jul 11, 2023
★★★ Do 404 errors and 301 redirects really hurt your SEO rankings?
404 errors are completely harmless, just like 301 redirects. You should choose the solution best suited to your specific scenario without worrying about negative SEO impact....
Gary Illyes Jul 11, 2023
★★★ Should You Launch Your New Domain Several Weeks Before an SEO Migration?
According to John Mueller, launching a new domain several weeks before migrating your site to it can reduce certain risks. He explains: "There are internal and external things that could be risky. It ...
John Mueller Jun 27, 2023
★★★ Should You Use "Coming Soon" Pages During a Site Migration?
According to John Mueller, it's best to avoid "coming back soon" pages as much as possible during a redesign. On Twitter, he indicates that he would simply use a 503 status code if the site migration ...
John Mueller May 09, 2023
★★ Should you really worry about the difference between 301 and 302 redirects anymore?
Google recognizes long-lasting 302 temporary redirects as permanent. While it's theoretically correct to use 301s, it's not critical because Google adapts as long as there is a redirect in place....
John Mueller May 04, 2023
★★★ Should you really maintain redirects when migrating to a new domain?
When switching to a new domain, you must absolutely redirect the old site to the new one instead of simply deleting it. The old domain has likely accumulated valuable signals that you cannot afford to...
Gary Illyes Apr 12, 2023
★★★ Should you really redirect all your 404 errors to your homepage?
Redirecting deleted old pages to your homepage depends on the content. You need to ask yourself whether this would make sense for the user or if it would be confusing. 404 errors are normal on the int...
Lizzi Sassman Apr 12, 2023
★★★ Does Google really treat 308 and 301 redirects the exact same way?
Google treats 308 and 301 status codes identically. Both mean permanent relocation. Googlebot treats 308 as fully equivalent to 301, and these codes are strong signals that the redirect should be cano...
Lizzi Sassman Apr 12, 2023
★★★ Should You Use a 301 or 302 Redirect for a Temporary Domain Migration?
An SEO specialist asked John Mueller an interesting question on Twitter. Facing a situation dreaded by many experts, he is forced to migrate a domain from www.domain to newshop.domain, then return to ...
John Mueller Mar 14, 2023
★★★ Why does Google insist on isolating site migrations from any other redesign work?
When migrating a large number of pages to another site, you must minimize error risks by isolating this change. Do not make other major modifications such as a redesign or restructuring. Redirect all ...
Lizzi Sassman Mar 09, 2023
★★ Should you choose a ccTLD over .com to target a local market?
For a Dutch website, it is preferable to keep a .nl domain rather than migrate to a .com. The .nl is a direct signal to all search engines that the site is local to the Netherlands, and migration carr...
Gary Illyes Mar 09, 2023
★★ Should You Use Noindex and Nofollow on Redirecting URLs?
A few days ago, William Sears asked Gary Illyes the following question: "Will the noindex and nofollow directives on a redirecting URL be respected or ignored?" He then specified that these directives...
Gary Illyes Feb 28, 2023
★★ Are HTTPS migrations really as trouble-free as Google claims?
HTTP to HTTPS migrations alone are considered relatively problem-free and do not require any special precautions. Google has not observed any incidents during this type of migration in a long time....
John Mueller Feb 23, 2023
★★ Should you really migrate a complex website in phases rather than all at once?
For complex migrations involving multiple domains or TLDs, it is recommended to proceed in phases rather than migrating everything simultaneously. This reduces the risk of organic traffic loss....
Gary Illyes Feb 23, 2023
★★★ Do you really need to panic if your site traffic hasn't recovered a year after migration?
The maximum timeframe for a site migration to stabilize is approximately one year. If traffic hasn't returned after this period, you should consider alternative strategies. This timeframe is not preci...
Gary Illyes Feb 23, 2023
★★ Does a properly executed SEO migration really guarantee zero traffic loss?
If a migration is executed correctly with appropriate redirections, there should theoretically be no traffic loss, as it is simply a matter of redirecting one URL to another....
Lizzi Sassman Feb 23, 2023
★★ Can a domain with a problematic past secretly tank your SEO performance for an entire year?
If a site migrates to a domain with a problematic history, even with a correct migration, it can take up to a year for the situation to stabilize completely in search results....
John Mueller Feb 23, 2023
★★★ Should you really avoid combining domain migration and complete redesign at the same time?
It is strongly inadvisable to combine a domain migration with a complete site redesign and URL restructuring. The more simultaneous changes you make, the greater the risks of errors and difficulties i...
Gary Illyes Feb 23, 2023
★★ Are Meta Refresh Redirects Destroying Your SEO Migration Strategy?
Meta refresh redirects are not recommended for site migrations because they can result in PageRank loss. JavaScript redirects may function but are not ideal....
John Mueller Feb 23, 2023
★★★ Is a comprehensive URL mapping really the single most critical factor that makes or breaks an SEO migration?
The most important element of a migration is creating a complete map showing where URLs come from and where they go. This map is essential for configuring redirects and verifying that everything has m...
Gary Illyes Feb 23, 2023
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