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 the choice between placing hreflang in the sitemap or on the page really impact processing speed?
Using hreflang tags in the sitemap and on the page is equivalent in terms of processing speed by Google. Choose the option that is most convenient based on your CMS and the structure of your site....
John Mueller Feb 22, 2018
★★★ Why is Googlebot struggling to interpret your structured data through Data Highlighter?
Googlebot may face difficulties with Data Highlighter if pages are modified. It is preferable to implement structured data directly in the HTML code of the pages to ensure better interpretation....
John Mueller Feb 22, 2018
★★ Does HTTP/2 really enhance Googlebot's crawling capabilities?
Googlebot could operate independently with HTTP/2, but it hasn't been prioritized because it doesn't offer significant advantages for crawling, which is still limited by the server's capacity....
John Mueller Feb 22, 2018
★★★ How will mobile-first indexing truly affect your SEO strategy?
Google plans to inform webmasters through Search Console when their site switches to mobile-first indexing. It is vital for sites with separate mobile versions to understand how this will impact them....
John Mueller Feb 22, 2018
★★ Are Umlauts and special characters in URLs really safe for SEO?
Special characters like Umlauts are well managed in URLs by Google. In theory, they do not pose a problem for indexing and ranking, but users may process them differently in searches....
John Mueller Feb 22, 2018
★★★ Is your mobile site truly in sync with your desktop version?
Google recommends ensuring that mobile and desktop versions of sites are correctly synchronized to avoid indexing problems. With the shift to mobile-first indexing, it is crucial to provide complete m...
John Mueller Feb 22, 2018
★★★ Does Googlebot really slow down when your server struggles?
Google adjusts the crawl rate based on perceived server capacities and can modify this rate if your server can handle more requests....
John Mueller Feb 20, 2018
★★ Should you block the indexing of your empty category pages?
You can use nofollow indexing for product-less categories if you wish to concentrate the link flow, although the impact may be minimal on standard-sized sites....
John Mueller Feb 20, 2018
★★★ Why does Google ignore the last modified date outside of the Sitemap?
Google uses the last modified date in the Sitemap file to facilitate crawling but does not utilize this information from the HTTP header or the page itself....
John Mueller Feb 20, 2018
★★★ Why does Google take weeks to reassess major sites after a redesign?
Google regularly reviews sites. Changes may be understood more quickly on certain URLs, but overall, larger sites with numerous changes can take longer to be fully reindexed....
John Mueller Feb 20, 2018
★★★ Should You Change Your XML Sitemap Name Daily to Improve SEO Rankings?
John Mueller explained in a hangout that it's not a good idea to modify the name of your XML Sitemap files daily (for example with a date, like sitemap-2018-02-12.xml, etc.) with numerous redundant an...
John Mueller Feb 12, 2018
★★ Does Page Loading Speed Really Impact Your Page Indexing?
Regarding last month's Speed Update, John Mueller and Gary Illyes indicated on Twitter that while this new algorithm would affect page rankings on mobile, it does not impact indexing in any way. A slo...
John Mueller Feb 05, 2018
★★★ Should you really stabilize your sitemap files to optimize crawling?
For sites that produce a lot of content every day, it is better to keep sitemap files as stable as possible to optimize recrawling by Googlebot. Dynamic file names are not an issue if the URLs change ...
John Mueller Feb 02, 2018
★★★ Why do the indexing figures from Search Console contradict the site: query?
The difference between the figures in Search Console and the site: query is that the site query is an approximate estimate, while the indexing status from Search Console is more accurate. The sitemap ...
John Mueller Feb 02, 2018
★★ Are PWAs Really More Complex than AMP for SEO?
Progressive Web Apps (PWAs) require specific SEO considerations because they rely on JavaScript. Ensure that Googlebot can index the content requiring JavaScript rendering. PWAs can be more complicate...
John Mueller Feb 02, 2018
★★★ Can a CDN unintentionally harm your crawl budget?
Google views CDNs as hosting platforms, and this does not directly impact SEO. However, Google adjusts crawl based on perceived server capacity, which can temporarily affect the crawl rate during a ch...
John Mueller Feb 02, 2018
★★ Does the URL structure really affect Google rankings?
URL structures do not directly influence SEO as long as they are used for effective tracking and evaluation. However, the choice between a thematic structure or by content type should be based on anal...
John Mueller Feb 02, 2018
★★★ Is responsive design really essential to thrive in the era of mobile-first indexing?
Responsive design is recommended for mobile-first indexing as it maintains the same HTML and URL for both mobile and desktop, making the management of links such as hreflang and rel=canonical easier. ...
John Mueller Feb 02, 2018
★★ Should you really index all your paginated pages?
Managing paged pages depends on your site. If content is available through multiple categories, it is not necessary to index all paginated pages. This can vary for news sites or highly dynamic content...
John Mueller Feb 02, 2018
★★ Do irrelevant comments really harm your pages' SEO?
Comment fields that do not provide added value to users should not be indexed, as they can dilute the page's relevance for search engines....
Google Jan 26, 2018
🔔

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.