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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Do You Really Need Backlinks for Google to Crawl Your Pages?
John Mueller indicated on Twitter that if a page had no backlinks, Googlebot would not crawl it. This is obviously false since a URL can be identified by the search engine via the XML Sitemap or be su...
John Mueller Apr 03, 2017
How Long Does It Actually Take Google to Process a Spam Report?
Gary Illyes indicated on Twitter that the time it takes for Google's Search Quality Team to process a "spam report" can vary, but as a general rule, it takes a few hours or a few days. However, the st...
Gary Illyes Feb 20, 2017
★★ Should You Use Google's URL Inspection Tool to Speed Up Page Indexing?
John Mueller provided an interesting insight during a hangout about how Google indexes web pages on a site. In fact, there are two possibilities for this: the "classic" method (Googlebot finds a link ...
John Mueller Feb 20, 2017
Why Does Google Refuse to Display Backlink Types in Search Console?
The "Links to your site" section of Search Console displays a large number of backlinks pointing to your site, but without specific mention of those that are dofollow, nofollow or disavowed, for examp...
Gary Illyes Feb 13, 2017
★★ Can You Still Trust the Site: Operator to Audit Your Page Indexation?
Gary Illyes indicated on Twitter that Google is not at all considering removing the "site:" query syntax, which allows you to obtain a sample of the pages that the search engine indexes for a given we...
Gary Illyes Feb 06, 2017
Will Google Really Warn Us Before Major Penguin Updates Hit?
Gary Illyes indicated on Twitter that Google would make sure to be "transparent" regarding Penguin if major changes were to take place in the future on this algorithmic filter. It's difficult to know ...
Gary Illyes Jan 30, 2017
★★★ Do errors in my XML Sitemap actually penalize the indexing of my other pages?
John Mueller indicated on Twitter that the fact that certain URLs are erroneous or return errors when reading an XML Sitemap file does not affect the reading and processing of other URLs (as on Bing f...
John Mueller Jan 16, 2017
★★★ Should You Modify Your Canonical Tags When Switching to Mobile First Index?
As long as Mobile First indexing is being tested by Google, there is no reason to change the "canonical" tags if you have a dedicated mobile site whose pages point to their desktop equivalents. John M...
John Mueller Jan 16, 2017
Why Doesn't Google Index Every Page on Your Website?
John Mueller stated in a hangout that it's normal for Google not to index all pages of a website or XML Sitemap. However, he didn't explain why certain pages are left out :(......
John Mueller Jan 09, 2017
★★ Can Rich Snippets Actually Trigger a Google Penalty on Your Site?
Google indicated in a hangout that certain sites were penalized for actions that didn't comply with rich snippet guidelines. And that all spam reports on this topic were being read. If clear manipulat...
Google Dec 19, 2016
★★ Is Google Really Going to Block Scraping and How Will This Impact Your SEO Tools?
John Mueller and Gary Illyes recently reminded us on Twitter that "scraping" (copying/pasting) Google's search results using automated tools, sending queries to the search engine via software, was aga...
John Mueller Dec 19, 2016
★★★ Does the Google Sandbox Really Exist or Is It Just an SEO Myth?
Gary Illyes indicated on Twitter that the notion of "Sandbox" (a penalty affecting a recent site, particularly for gaining links too quickly at its inception) does not exist. It would therefore appear...
Gary Illyes Dec 19, 2016
★★★ Should You Change Your URLs During an HTTPS Migration or Prioritize Fast Indexing?
John Mueller himself explained that it's not necessarily a good idea to take advantage of an HTTP to HTTPS migration to change URL slugs (to insert more keywords, for example), because the switch to H...
John Mueller Dec 12, 2016
Are EMDs Still a Risk for Your SEO in 2024?
Gary Illyes indicated last week that he was on the hunt for "spammy" Exact Match Domain (EMD) names. He also explained that EMDs themselves are not problematic, but rather their combination with other...
Gary Illyes Dec 05, 2016
★★ What's the Ideal Page Load Time for Google SEO Rankings?
John Mueller indicated on Twitter that an interesting metric for average page display time on a website was to keep this figure below 2 to 3 seconds, using the WebPageTest tool. For our part, we most ...
John Mueller Dec 05, 2016
Can You Really Mix Multiple Structured Data Formats on the Same Page?
A user asked on Twitter whether it was possible to use multiple structured data formats such as Microdata, RDFa, or JSON-LD on the same web page. Gary Illyes replied that it posed no problems, but ano...
Gary Illyes Nov 21, 2016
★★★ Is Hummingbird Really an Anti-Spam Algorithm or Does It Serve an Entirely Different Purpose?
John Mueller indicated on Twitter that Hummingbird, launched in 2013, was not an algorithm specifically dedicated to fighting spam. This is clearly true, since Hummingbird (just like its legitimate su...
John Mueller Nov 21, 2016
★★ Does Domain Registration Length Really Impact SEO Rankings?
John Mueller indicated on Twitter that purchasing (or renewing) a domain name for a longer or shorter period is not considered a relevance criterion by Google. The rumor suggests that the longer you r...
John Mueller Nov 14, 2016
★★★ Should You Still Disavow Links That Have Gone Nofollow or Disappeared?
John Mueller indicated on Twitter that if a link has disappeared or has switched to nofollow, it is no longer necessary to include it in a disavow file. This indeed seems logical....
John Mueller Nov 07, 2016
★★★ Why Does Google Prefer JSON-LD for Structured Data?
John Mueller indicated that the JSON-LD format was Google's favorite for implementing structured data markup. While it certainly accepts all other formats, he recommends JSON-LD....
John Mueller Oct 24, 2016
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