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 avoid multiple progressive redirects to protect your SEO?
Restructuring a site with multiple successive redirects (one per month over a year) is poor SEO practice. Each redirect step takes time to process and causes fluctuations. You should redirect directly...
John Mueller May 07, 2021
★★★ Why does Google continue crawling 301 redirected URLs for over a year?
Even after more than a year of a 301 redirect, Google may continue to crawl the old URLs if there are external links pointing to them. However, after a few passes, Google switches the canonical to the...
John Mueller May 07, 2021
★★★ Are the structured data from your mobile version also applicable to desktop?
Once a site has migrated to mobile-first indexing, Google uses the structured data from the mobile version for all rich results, including those displayed on desktop. Before migration, the data from e...
Martin Splitt Apr 26, 2021
★★ Should you still redirect HTTP to HTTPS if it hasn't been done yet?
Implementing HTTP to HTTPS redirects is still recommended even if it wasn't done initially. It's good practice for users. The visible SEO effect will likely be minimal if the site is already well-esta...
John Mueller Apr 23, 2021
★★★ Does a 301 redirect really suffice to impose the canonical to Google?
Google uses 301 redirects as a signal of canonicalization, but also relies on other signals: internal links, sitemaps, external links, and annotations. It can happen that a redirect is in place but th...
John Mueller Apr 23, 2021
★★★ Is it true that having different mobile and desktop content still gets penalized by Google after the Mobile-First Index?
Having significantly different content between the mobile and desktop versions of the same URL can cause indexing problems, even after migration to the Mobile-First Index. The main content should be i...
Google Apr 22, 2021
★★★ How does redirecting from HTTPS to HTTP potentially derail your indexing?
An incorrect redirect from HTTPS to HTTP (instead of HTTP to HTTPS) can prevent indexing problem resolution and slow down the implementation of fixes....
Google Apr 22, 2021
★★★ Why does redirecting from HTTPS to HTTP paralyze canonicalization?
An incorrect redirection from HTTPS to HTTP can prevent Google from resolving canonicalization issues. It is crucial to redirect HTTP to HTTPS and not the other way around....
Google Apr 22, 2021
★★★ Are Expired Domain Redirects Really Ignored by Google?
Buying expired domains and redirecting them to your site is an old tactic that Google can recognize. By default, Google's algorithms try to ignore these redirects. If it’s too integrated into the site...
John Mueller Apr 16, 2021
★★★ Does switching CMS really destroy your organic search rankings?
Switching CMS (e.g., from Squarespace to WordPress) will likely affect your ranking, positively or negatively depending on the quality of the migration. Google does not only look at text but at everyt...
John Mueller Apr 16, 2021
★★★ Why has mobile-desktop parity become a critical issue for your organic visibility?
Google completed its migration to mobile-first indexing in March 2021. Significant disparities found between mobile and desktop pages can negatively impact sites during this migration....
Google Apr 15, 2021
★★★ Is it true that mobile-first indexing is really completed and what risks do you still face?
Google completed its migration to a mobile-first index in March 2021. Disparities between mobile and desktop pages can negatively impact sites....
Google Apr 15, 2021
★★★ Do 301 and 302 Redirects Really Matter Differently for SEO?
John Mueller indicated on Twitter that in most cases, Google treats 301 and 302 redirects in almost the same way, because it knows that 302 redirects can remain in place for months, or even longer. It...
John Mueller Apr 12, 2021
★★★ Should you really worry about the difference between 301 and 302 redirects?
A 302 redirect (temporary) in place for several years will be treated by Google as a 301 redirect (permanent). Google will index the destination page and no value is lost just because it's a 302. Afte...
John Mueller Apr 01, 2021
★★ Are long-term 302 redirects really equivalent to 301s for SEO?
If a 302 (temporary) redirect remains in place for years, Google will treat it as a permanent redirect and index the destination page. No loss of value is associated with the choice between 302 and 30...
John Mueller Apr 01, 2021
★★ Is the Change of Address Tool in Search Console really essential for migrating a site?
The Change of Address tool in Search Console speeds up migration but is not critical. Many successful migrations occur without this tool. The main thing is to properly configure the redirects and ensu...
John Mueller Mar 26, 2021
★★ Should you really avoid geographic IP redirects on your site's country versions?
For geographic IP redirects, apply them only to the generic homepage (www), not to the country-specific versions. This way, the generic page can be crawled, and hreflang annotations are visible, while...
John Mueller Mar 26, 2021
★★★ How can you properly canonicalize a multilingual site without losing your international rankings?
In a multilingual site, each language version of a page should have a canonicalization pointing to its own language version. Avoid redirects based on cookies or browser detection that may cause errors...
Google Mar 25, 2021
★★ Should you really redirect your old AMP URLs to the new ones?
Redirecting old AMP URLs to the new ones is ideally recommended, but it's less critical than for normal pages. Google refreshes the AMP cache quickly and notices URL changes within a few days....
John Mueller Mar 12, 2021
★★ Is it necessary to redirect your AMP URLs during a change?
When changing AMP URLs, redirections are less critical than for standard URLs because Google refreshes the AMP cache quickly. The delay between discovery and update is a few days, but it is still reco...
John Mueller Mar 12, 2021
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