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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★★ Is Google really able to crawl and index React JS like any traditional website?
Google can handle Single Page Applications built with React JS similarly to other JavaScript frameworks, as long as the pages are properly rendered and the URLs are accessible and unique....
John Mueller Mar 09, 2017
★★ Do your site's iframes on other domains hurt your SEO?
Integrating your own site as an iframe on other affiliate sites generally does not have a negative impact. There is no particular disadvantage as long as your main site is indexed as the primary sourc...
John Mueller Mar 09, 2017
★★ Is it really better to use the 410 code instead of the 404 to speed up deindexing?
Pages that return a 410 error are removed from the index slightly faster than those returning a 404 error because 410 indicates that the page has been permanently removed. However, for an already well...
John Mueller Mar 09, 2017
★★★ Can your site structure really save your mobile indexing?
The internal structure of a site, including internal links and structured data, is essential for mobile indexing and must be considered in both versions of the site....
John Mueller Mar 07, 2017
★★★ Does robots.txt really block the transmission of PageRank and prevent indexing?
URLs blocked by the robots.txt file can still receive PageRank through external links, and can be indexed with minimal information if they are not crawlable....
John Mueller Mar 07, 2017
★★★ Does mobile-first indexing really inherit all desktop signals?
When transitioning to mobile-first indexing, all existing signals related to desktop must apply to the mobile site. Google ensures this transition takes place smoothly to avoid any loss in indexing....
John Mueller Mar 07, 2017
★★★ Is it true that Google really indexes content hidden under mobile tabs?
On mobile sites, hidden content under tabs is taken into account for indexing, unlike what happens on desktop sites....
John Mueller Mar 07, 2017
★★ How does internal link architecture truly influence the crawl of very large websites?
For very large sites, the efficiency of the internal link structure must be optimized for crawling and discovery. However, this optimization depends on the specific case and is not necessary for all s...
Google Mar 02, 2017
★★★ Should you really align mobile and desktop content to rank well?
It is not mandatory to have identical content on the desktop and mobile versions of a website. However, significant differences can affect rankings, as mobile-first indexing primarily uses the content...
Google Mar 02, 2017
★★ Does Google Really Remove All URL Variants When You Submit a Removal Request in Search Console?
John Mueller also indicated that if you submit a URL removal request via Search Console, all versions of that address will be removed from the index: Http/Https, with and without "www". So it's worth ...
John Mueller Feb 27, 2017
★★★ Should you really point your canonicals to the main page?
A canonical tag should not point to a main page if the pages are not exact copies. Each page version should be self-canonical....
John Mueller Feb 24, 2017
★★ Can you really speed up the deindexing of a page with the noindex tag?
There is no way to significantly speed up the deindexing of pages with No Index. Including URLs in the Sitemaps with the modification date may encourage Google to recrawl the pages more quickly to app...
John Mueller Feb 23, 2017
★★★ Could A/B testing jeopardize your organic rankings?
A/B testing generally does not have a negative impact on SEO, provided that all versions are treated equally by Googlebot and that the tests achieve a stable state. Significant variations in content m...
John Mueller Feb 23, 2017
★★★ Should you really avoid combining NoIndex and Canonical on the same page?
Combining a NoIndex tag and a Canonical tag on the same page can cause issues. It may be better to use Canonical alone or redirect when possible. A NoIndex tag does not affect crawl budget, as we cont...
John Mueller Feb 23, 2017
★★ Should you really index all your content or make strategic choices?
It is recommended to only index content that truly helps users solve their problems or answer their questions....
Google Feb 23, 2017
★★ What happens when your international pages look too similar for hreflang to work?
Issues with hreflang can arise if the indexed pages are similar. If this is a problem, you need to ensure that the content differs enough so that our systems do not consider them identical, allowing f...
John Mueller Feb 23, 2017
★★ Should you really compress your Sitemap files for SEO?
Google accepts both compressed and uncompressed Sitemap files equally. What matters is that the Sitemaps are presented in the way that works best for the site....
John Mueller Feb 23, 2017
★★ Does Google really determine the crawl frequency on its own?
Google's crawl frequency is automatic and will depend on the content updates of your site. Tags and restrictions can be set in Google Search Console....
Google Feb 23, 2017
★★ Why do your site's crawl statistics fluctuate so much?
Fluctuations in crawl statistics can occur due to changes on the site, the frequency of updates, or automatic adjustments made by Google’s systems. These factors control the crawl frequency, which is ...
Google Feb 23, 2017
★★★ Is it really necessary to serve server-rendered HTML to rank with JavaScript?
It is advisable to provide a rendered HTML version of JavaScript pages for all users and search engines while allowing the rest of the navigation to occur via JavaScript. This improves discoverability...
John Mueller Feb 23, 2017
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