What does Google say about SEO? /
The Crawl & Indexing category compiles all official Google statements regarding how Googlebot discovers, crawls, and indexes web pages. These fundamental processes determine which pages from your website will be included in Google's index and potentially appear in search results. This section addresses critical technical mechanisms: crawl budget management to optimize allocated resources, strategic implementation of robots.txt files to control content access, noindex directives for page exclusion, XML sitemap configuration to enhance discoverability, along with JavaScript rendering challenges and canonical URL implementation. Google's official positions on these topics are essential for SEO professionals as they help avoid technical blocking issues, accelerate new content indexation, and prevent unintentional deindexing. Understanding Google's crawling and indexing processes forms the foundation of any effective search engine optimization strategy, directly impacting organic visibility and SERP performance. Whether troubleshooting indexation problems, optimizing crawl efficiency for large websites, or ensuring proper URL canonicalization, these official guidelines provide authoritative answers to complex technical SEO questions that shape modern web presence and discoverability.
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★★★ Does Google really index JavaScript just like any HTML page?
Google indexes and renders JavaScript pages like any other page. It's advisable to use the Fetch and Render tool in Search Console to verify their indexing....
John Mueller Jun 26, 2017
★★★ Why do rel='next' and rel='prev' tags fail on noindex pages?
Using rel='next' and rel='prev' tags does not affect noindex pages. Google relies on these contents for proper page indexing....
John Mueller Jun 26, 2017
★★★ Does mobile experience really affect desktop ranking in a mobile-first world?
Even though user experience is not directly taken into account for ranking, the shift to a mobile-first index means that the mobile versions of these pages will be used for ranking on both mobile and ...
John Mueller Jun 16, 2017
★★ How can sitemaps speed up the indexing of your expired content?
The ideal solution for regular updates and expired content is to automate the generation and submission of sitemap files so that Google can quickly update its indexes....
John Mueller Jun 16, 2017
★★★ Do robots.txt redirections really create issues for crawling?
Google follows the redirects of robots.txt files, so even if the file redirects, GoogleBot will continue to follow it according to their documentation....
John Mueller Jun 16, 2017
★★★ Should you really redirect your mobile site to a responsive one before the mobile-first indexing?
Redirecting mobile versions to a responsive version is the right choice and is simpler before the transition to mobile-first indexing, as it avoids additional ranking fluctuations....
John Mueller Jun 16, 2017
★★★ Should you really avoid redirects to remove AMP pages from Google's index?
To remove AMP pages, it is advised to ensure that these pages return a 404 status code instead of redirecting to another page, so that Google can eventually remove them from its index....
Google Jun 15, 2017
★★ Do 404 errors really hurt your site's indexation?
Having numerous 404 errors on your site won't stop Google from indexing other pages, but it can affect crawl efficiency by wasting your bandwidth....
Google Jun 15, 2017
★★★ Do relative URLs really impact the indexing of your pages?
Relative URLs can be used for internal links as long as they correctly point to the desired structure of the site. This does not affect indexing....
Google Jun 15, 2017
★★★ Does a shift in infrastructure really slow down crawling without affecting rankings?
When an infrastructure changes, such as a server change, Google adjusts crawling accordingly. Rankings are not affected, but the infrastructure change can temporarily slow down crawling....
John Mueller Jun 12, 2017
★★★ Why is Google ignoring your hreflang canonical, and how can you fix it?
If an incorrect version of a page with hreflang appears in search results, check that the specified canonical is the same as the one Google is using for indexing....
John Mueller Jun 12, 2017
★★★ Does Google Really Perform a Seasonal Spring Cleaning of Its Index?
John Mueller indicated in a hangout that Google does not perform a "spring cleaning" of its index by removing, at that time of year, more low-quality pages. One might wonder why it would do that, anyw...
John Mueller Jun 12, 2017
★★★ How does the update frequency of Search Console transform your SEO monitoring?
Data in Search Console, such as crawl errors, are updated several times a week....
John Mueller Jun 12, 2017
★★ Should You Worry About a Drop in Your Site's Crawl Rate?
John Mueller explained on Twitter that the fact that a website experiences a lower crawl rate at a given time from the search engine's robots is not necessarily a negative signal for your future visib...
John Mueller Jun 12, 2017
★★★ How can you manage low-quality user content without hurting your marketplace?
In a marketplace, the quality of the pages depends on internal content management policies. Use canonicals or noindex to manage low-quality user-submitted content....
John Mueller Jun 12, 2017
★★★ How Long Can You Use a 503 Code Before Risking Deindexation?
John Mueller reminded us on Twitter that using a 503 code (Service Unavailable) is not a problem if it's implemented for a few hours (for a quick maintenance operation, for example), but it should not...
John Mueller Jun 12, 2017
★★★ How can you know exactly how Google sees and understands your web page?
John Mueller explained on Twitter that if you want to know how Google sees your web page, it's better to use Search Console (Crawl section > Fetch as Google) than the "Cached" option available in sear...
John Mueller Jun 06, 2017
★★ Will Google Launch a Public Sandbox to Test Mobile First Index Before Deployment?
In 2009, when Google launched its new Caffeine indexing structure, the search engine set up a "sandbox", or new version of its index on a specific URL, to test the new infrastructure being implemented...
John Mueller Jun 06, 2017
★★★ Does Nofollow Really Burn Your Crawl Budget?
John Mueller indicated on Twitter that using a "nofollow" attribute on links does not "burn" crawl budget for a website. Fortunately so. We can even say that this technique is rather beneficial in thi...
John Mueller Jun 06, 2017
★★★ Does simplified dynamic content on mobile really hurt your indexing?
With mobile-first indexing, make sure that dynamic content is not simplified for mobile, as this could affect what Google indexes if the content differs from the desktop pages. Responsive design is ge...
John Mueller Jun 02, 2017
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