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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★★★ What really happens when noindex and canonical contradict each other on the same page?
The simultaneous use of a rel=canonical and a noindex tag can cause confusion for our algorithms. However, we generally try to follow the rel=canonical, assuming that it is an error or an attempt to e...
John Mueller Aug 11, 2017
★★ Should you really mark deep paginated pages as noindex?
Using noindex on deeper paginated pages in a series may not improve crawl budget, but it is still commonly practiced....
John Mueller Aug 11, 2017
★★★ Should your mobile structure dictate your choice between www and non-www domains?
Google considers that organization and structural clarity are essential for effective crawling. The mobile representation must account for limited space, but that should not alter the domain strategy ...
John Mueller Aug 10, 2017
★★★ Should you really count words to rank on Google?
Google does not recommend counting the maximum number of words on a page. The file size could technically limit indexing, but it does not significantly affect a page unless a script produces an infini...
John Mueller Aug 10, 2017
★★★ Should you really mark 404 errors as resolved in Search Console?
Marking 404 errors as resolved in Search Console does not affect crawling or indexing; it merely removes these errors from the interface display....
John Mueller Aug 10, 2017
★★★ How does Google really determine the crawling frequency of your site?
The frequency of crawling by Google depends on factors such as server speed, content quality, and changes made to the site. Google adapts its resources accordingly to maximize the efficiency of crawli...
John Mueller Aug 10, 2017
★★★ Do 404 and Soft 404 errors really harm your site's SEO?
404 or Soft 404 errors do not imply that the quality of a site is poor. They merely indicate that these URLs are removed from the index, and Google aims to focus on the rest of the site....
John Mueller Aug 10, 2017
★★ How can you effectively declare your language versions in sitemaps to ensure indexing?
When declaring language versions through sitemaps, all respective URLs must be properly indexed in the sitemap to guarantee their visibility....
Google Aug 08, 2017
★★★ Does the Order of URLs in an XML Sitemap File Actually Matter to Google?
John Mueller explained on Twitter that you can structure your XML Sitemap file absolutely however you want in terms of field order, and this won't cause any problems for Google. The file is read autom...
John Mueller Aug 07, 2017
★★★ Are Slow Pages Really Indexed by Google?
The loading speed of a page does not stop Google from indexing it, but it can affect the crawl frequency if the pages take too long to load....
John Mueller Aug 02, 2017
★★★ Does a temporary noindex really permanently lose its ranking?
If a site has been accidentally marked as "noindex" and this tag is removed, the ranking should return to its previous level once the site is reindexed....
John Mueller Aug 02, 2017
★★★ Should you duplicate hreflang tags for mobile and desktop versions?
For the mobile versions of sites, Google recommends retaining the same hreflang tags as the desktop versions, pointing to the canonical desktop pages....
John Mueller Aug 02, 2017
★★★ Should you really abandon the site: command to count your indexed pages?
Using 'site:domain.com' is not a reliable method for determining the number of indexed pages. It is better to use a sitemap to verify the URLs that are actually indexed....
John Mueller Aug 02, 2017
★★★ Should you really unblock images in robots.txt to boost your SEO?
If images on a page are blocked by robots.txt, it will not affect the site's performance in web search, although it will prevent the images from being indexed in image search....
John Mueller Aug 02, 2017
★★★ Does using noindex truly protect your site from quality penalties?
Pages with a noindex tag are not considered in the overall quality assessment of a site. To enhance the perception of quality, it is recommended to improve low-quality pages....
John Mueller Aug 02, 2017
★★★ Do non-Unicode fonts really harm your content's indexing?
For websites using non-Unicode fonts such as in Burmese, Google attempts to recognize this situation and map these fonts to their Unicode versions, enabling proper indexing of the content. Using Unico...
John Mueller Aug 02, 2017
★★★ Can You Use 301 Redirects in Hreflang Tags?
We asked John Mueller whether a URL in a hreflang tag could be subject to a 301 redirect. His answer was clear: URLs in hreflang tags must be canonical. This therefore rules out the use of such redire...
John Mueller Jul 24, 2017
★★★ Does the noindex tag really stop Google from indexing your pages?
Using noindex tags on specific pages tells Google not to index those pages. This is useful if you want certain pages to be excluded from the search index....
Google Jul 20, 2017
★★ How should you handle canonicals for identical content in Angular applications?
For pages generated via Angular where the content is identical across multiple URLs, it is advisable to define a canonical URL so that Google knows which version of the page to index....
Google Jul 20, 2017
★★★ Should you really restore your content AFTER securing a hacked site?
In the event of a site hack, you must first secure the site before restoring the content. Once the site is secured, submit a review request to reintegrate the site into Google’s index....
Google Jul 20, 2017
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