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.
Quick SEO Quiz

Test your SEO knowledge in 5 questions

Less than a minute. Find out how much you really know about Google search.

🕒 ~1 min 🎯 5 questions
★★★ Does Google really index every single piece of content you publish?
Google cannot index all content. Even with technically correct sites, the quality bar is higher than before. Google must ensure that only what is genuinely useful and relevant for users is indexed....
John Mueller Dec 24, 2021
★★★ Can Google arbitrarily choose which language version to index when the content is identical?
If the content is identical across multiple language versions (only the currency changes), Google can choose a canonical version and index only that one. Hreflang will still work to display the correc...
John Mueller Dec 24, 2021
★★ Why is Google refusing to set a final date for mobile-first indexing?
Mobile-first indexing is still ongoing. Due to issues observed on a small number of sites, Google has decided not to set a final date for now and will continue to inform sites of issues as needed....
John Mueller Dec 23, 2021
★★ Should you maintain a static copy of your site during temporary downtime?
If a site needs to be taken offline for security reasons, Google recommends maintaining a static copy of the site with the same URLs. This allows users to find information and helps search engines kee...
John Mueller Dec 23, 2021
★★★ Should you really ditch geolocation redirects in favor of hreflang?
For multilingual and multi-regional sites, Google strongly recommends using hreflang rather than automated redirects based on geolocation to ensure proper indexing of all language versions....
Google Dec 21, 2021
★★★ Could A/B testing actually risk cloaking in Google's eyes?
For A/B tests following the official recommendations (using canonical tags, 302 redirects), there is no risk of cloaking, even if tests last several weeks or months, as long as the guidelines are foll...
Google Dec 21, 2021
★★ Does publishing a website legally mean you allow Google to crawl it?
Putting a public website on the Internet legally implies implicit consent for search engines to crawl it, unless otherwise stated via robots.txt. This expectation has existed since the mid-90s....
David Price Dec 21, 2021
★★ Does Googlebot really follow links or does it work differently?
Googlebot doesn't 'follow' links as it's often described. It's a fetching system that downloads content from a list of URLs. The terminology 'following links' gives Googlebot too much autonomy....
Gary Illyes Dec 21, 2021
★★ Is robots.txt really enough to control your site's crawl?
Robots.txt provides webmasters with a simple and autonomous way to control which crawlers can access their site, without requiring complex processes. It is a lightweight but effective control mechanis...
David Price Dec 21, 2021
★★ Is it true that Google completely refuses to modernize the robots.txt format?
Google refuses proposals to move robots.txt to the .well-known directory or to convert it to JSON. The simple text format at the root of the site has worked for 25 years, and adding complexity brings ...
Gary Illyes Dec 21, 2021
★★ Is it true that Google rejects overly granular robots.txt directives?
Adding overly specific directives in robots.txt to control specific features creates interpretation problems when those features evolve. This is why robots.txt remains intentionally simple and high-le...
David Price Dec 21, 2021
★★★ Is it true that Google's open source robots.txt parser is really used in production?
The robots.txt parser that Google has made open source is exactly the same code used in production. Changes to the open source code are deployed in production within 1 to 2 days....
Gary Illyes Dec 21, 2021
★★ How does Googlebot adjust its crawl frequency to prevent server crashes?
Google constantly balances between maintaining an up-to-date view of the web and not overwhelming sites with too many requests. The goal is to provide good value for the bandwidth consumed....
David Price Dec 21, 2021
★★★ Do IP redirections really block the indexing of your multilingual content?
If automatic IP-based redirections prevent Googlebot from accessing certain language versions of a site, those pages might not be indexed or displayed in the appropriate search results....
Google Dec 21, 2021
★★ Why is Google so silent about massive indexing problems?
Regarding indexing issues and 'Discovered - not indexed' pages, Google continues to receive reports and forward them to technical teams, but has no new information to communicate at this time....
Google Dec 21, 2021
★★★ Does the robots.txt file really prevent the indexing of your pages?
The robots.txt file is used to control crawling by automated bots. Google can index URLs blocked by robots.txt without retrieving their content, based solely on external links pointing to those pages....
Gary Illyes Dec 21, 2021
★★★ Are geo-targeted redirects using cookies considered cloaking by Google?
Redirecting users based on their geolocation (via cookies) is not considered cloaking as long as Googlebot sees the same content as users. However, this can limit the discoverability of alternative la...
Google Dec 21, 2021
★★★ Can you index a page without crawling it?
There is a fundamental distinction between crawling ( retrieving content) and indexing (storing in the index). Google can index a URL without crawling its content if it is blocked by robots.txt but re...
Gary Illyes Dec 21, 2021
★★★ Is it really necessary to have strictly identical content between mobile and desktop for Mobile-First Indexing?
With Mobile-First Indexing, Google uses the mobile version for indexing and ranking. If mobile content is reduced compared to the desktop version, mobile users may not find the expected information. I...
Google Dec 21, 2021
★★★ Does hiding mobile content with CSS really sabotage your Mobile-First indexing?
Hiding content with CSS on mobile while keeping it in the source code goes against the purpose of Mobile-First Indexing. Google will index this hidden content, but the mobile user will not see it, cre...
Google Dec 21, 2021
🔔

Get real-time analysis of the latest Google SEO declarations

Be the first to know every time a new official Google statement drops — with full expert analysis.

No spam. Unsubscribe in one click.