What does Google say about SEO? /
This category compiles all official Google statements regarding JavaScript and technical aspects of search engine optimization. Modern JavaScript frameworks (React, Angular, Vue.js) and web application architectures (SPA, SSR, CSR) present critical challenges for crawling and indexing. Google's guidance on JavaScript rendering, dynamic DOM manipulation, AJAX implementation, and API calls is essential for ensuring client-side content visibility. SEO professionals will find authoritative positions on implementation best practices, differences between server-side and client-side rendering, and recommendations for optimizing load times while guaranteeing content accessibility to search crawlers. Understanding data formats (JSON, XML) and their SEO implications completes this vital resource. These official declarations help prevent common technical implementation mistakes that can severely impact the search performance of modern websites and JavaScript-powered applications. Access to Google's verified positions on these technical matters enables practitioners to make informed architectural decisions and implement JavaScript solutions that maintain strong organic search visibility while delivering enhanced user experiences.
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★★★ Can Quality Raters really penalize your site?
Manual penalties are applied by Google's spam-fighting team and are visible in Search Console. Quality Raters do not impose penalties but help improve algorithms....
John Mueller Oct 03, 2019
★★★ Is it really necessary to consolidate your content on a single domain to rank?
Using redirects or rel=canonical between old and new domains transfers ranking signals. Google advises consolidating relevant content under a single domain to enhance its authority....
John Mueller Oct 03, 2019
★★ How long does it really take for Google to reindex after a site relaunch?
After a domain change or URL structure update, it is normal for Google to take some time to reindex the site. Old URLs may temporarily appear in search results, even if they redirect correctly....
John Mueller Oct 03, 2019
★★ Should you buy your competitors' domains to boost your SEO?
Redirecting a competitor's domain can be useful if it brings significant direct traffic, but access to the disavow file requires verification in Search Console....
John Mueller Oct 03, 2019
★★★ Does duplicate content really trigger a Google penalty?
Duplication of content across different domains does not automatically result in a penalty. Google can choose to index one of the versions rather than penalizing, and each case is handled individually...
Google Oct 02, 2019
★★★ Can Old Content Actually Hurt a New Website That Republishes It?
John Mueller explained on Twitter that there's no problem if content is older than the launch date of the site hosting it (example: a new domain name recovers content from a previous, now-abandoned ad...
John Mueller Sep 30, 2019
★★★ Can Googlebot really crawl user-initiated events?
Googlebot generally cannot explore user-initiated events such as SQL events or JavaScript events. To show this content to Googlebot, it is recommended to use dynamic rendering or HTML snapshots....
John Mueller Sep 27, 2019
★★★ Where Should You Place JSON-LD in Your HTML Code: Head or Body?
John Mueller, in a new video from his #AskGoogleWebmasters channel, explains that Google accepts several structured data markup formats, such as Microdata, RDFa, or JSON-LD. He answers a user's questi...
John Mueller Sep 16, 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
★★★ Can You Actually Mix Different Structured Data Formats on the Same Page?
Google's Twitter account for webmasters indicated that it was entirely possible to use different structured data tags on the same page, or even different types (for example microdata and JSON-LD)....
Google Sep 09, 2019
★★ Does Web Traffic Really Influence Google Rankings?
Google's Webmaster Twitter account indicated that traffic to a website is not a relevance criterion for Google's algorithm....
Google Sep 02, 2019
★★★ Is an XML Sitemap Really Essential for Your Google Rankings?
Gary Illyes (Google) indicated on Twitter that XML Sitemap files still remain the second source of URL discovery for the search engine today (he had already said this in 2014, so the situation has not...
Gary Illyes Sep 02, 2019
★★★ Are Multilingual Backlinks Toxic to Your SEO?
John Mueller reminded us on Twitter that getting backlinks from sites that aren't in your language isn't necessarily a spam signal indicating that these links are "toxic"......
John Mueller Aug 26, 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
★★★ Why Is Keeping the Same URL as Long as Possible Crucial for Your SEO?
The same John Mueller, always on Twitter, has "really recommended keeping the same URL for a web page for as long as possible."...
John Mueller Jul 29, 2019
★★ Is PageRank Really Dead Since 2006, or Has It Simply Evolved?
Jonathan Tang, a former Google engineer (between 2009 and 2014) explained on a forum that Google no longer used the notion of PageRank in its algorithm since 2006. He actually clarified later that the...
Google Jul 22, 2019
★★★ Does Domain Age Really Influence Google Rankings?
John Mueller once again reiterated on Twitter that the age (seniority) of a domain name does not play a role in SEO. A new domain name will have just as much chance of ranking as an old one......
John Mueller Jul 16, 2019
★★★ How Long Does a Successful SEO Migration Actually Take?
John Mueller mentioned during a webmaster hangout that if everything was done properly on a website, a migration could be very quick in terms of SEO, in the order of a few days (a day or two, accordin...
John Mueller Jul 02, 2019
★★★ Do XML Sitemaps Really Impact Your Site's Ranking?
Gary Illyes indicated on Twitter that the content of XML Sitemap files did not impact a site's rankings in the search engine's results....
Gary Illyes Jul 02, 2019
★★★ Do Duplicate Hn Tags (Desktop/Mobile) Actually Hurt Your SEO Rankings?
We noticed, when analyzing certain websites, that some templates and CMS platforms (especially when using a "builder") create duplicate Hn tags: one version for desktop, another for mobile. We therefo...
Google Jun 25, 2019
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