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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★★ Should you really regenerate your sitemaps to remove obsolete URLs?
If sitemap files point to non-existent pages or pages with an obsolete URL structure, they need to be regenerated to contain only current URLs. It's a matter of site hygiene rather than crawl budget....
John Mueller Mar 05, 2021
★★★ How can you compel Google to refresh your JavaScript and CSS files during rendering?
To force Google to update JavaScript and CSS resources during rendering, use a content hash in the URL of the files. This way, Google will identify the new files, unlike persistent cache with identica...
John Mueller Mar 05, 2021
★★ Do JSON requests really impact your crawl budget?
All requests to the server via Googlebot's infrastructure, including JSON files, count towards the crawl budget. However, many JSON requests do not necessarily imply a limitation on crawling regular c...
John Mueller Mar 05, 2021
★★★ Does the crawl budget really depend on your server speed?
The crawl budget includes two aspects: the technical limitations of the server and the demand from Google based on the perceived importance of the pages. Even with a fast server, Google may limit craw...
John Mueller Mar 05, 2021
★★★ How can you effectively map URLs and verify redirects during migration to avoid losing rankings?
During a site migration, it is crucial to trace each old URL to its new destination, verify all redirects, and ensure that all internal signals (rel canonical, navigation, footer) point to the new URL...
John Mueller Mar 05, 2021
★★★ Should you really keep 301 redirects for at least a year?
Google recommends maintaining 301 redirects for at least one year, ideally longer. After this period, Google should have crawled all old URLs with the redirect at least twice. Less significant URLs th...
John Mueller Mar 05, 2021
★★★ Should you worry about having 90% of your site in noindex?
A large number of noindex pages or pages returning 404 errors is not seen as a sign of poor quality by Google. Having 90% of pages in noindex is not problematic for SEO....
John Mueller Mar 05, 2021
★★★ Can Google really figure out that a URL is duplicated without even crawling it?
Google uses a predictive approach: if several URLs with a similar structure show the same content, Google learns this pattern and can treat other similar URLs as duplicates without crawling them, in o...
John Mueller Mar 05, 2021
★★ Should you really start small to unlock your crawl budget?
For sites with a lot of content, it is recommended to start with a limited set of quality pages. Google will learn that the content is good and gradually increase the crawl to 1000 and then 10000 page...
John Mueller Mar 05, 2021
★★★ Does using a canonical tag alone truly control page indexing?
Google takes multiple signals into account beyond the canonical tag to determine the canonical page. It may happen that Google still indexes variants despite the canonical, especially during the first...
John Mueller Mar 05, 2021
★★ Should you really use a 410 code instead of a 404 to remove a page from Google's index?
Google makes a slight distinction between 404 (page temporarily unavailable) and 410 (page permanently removed). The 410 slightly speeds up removal from the index, but the difference is not significan...
John Mueller Mar 05, 2021
★★★ Does the noindex of variants really contaminate the canonical page?
If product variants are set to noindex with a canonical pointing to the main page, the noindex is not transmitted to the canonical page. However, external links pointing to these noindex variants will...
John Mueller Mar 05, 2021
★★★ What is crawl demand and how does Google really calculate it?
Crawl demand represents how much Google desires the content. It is influenced by URLs that have not yet been crawled and by Google's estimation of the frequency of changes to known URLs....
Daniel Waisberg Mar 03, 2021
★★★ Does a slow website really hurt your Google crawl rate?
If the site slows down or responds with server errors, the crawl rate decreases and Google crawls fewer pages....
Daniel Waisberg Mar 03, 2021
★★ Why does Google reserve the Crawl Stats report exclusively for domain properties?
The Crawl Stats report in Search Console is only available for domain-level properties. It is not available for properties that include a URL prefix....
Daniel Waisberg Mar 03, 2021
★★★ Is it true that crawl budget is really unnecessary for small websites?
If your site has less than a few thousand pages, you don't need to worry about crawl budget. This concept is mainly relevant for large websites....
Daniel Waisberg Mar 03, 2021
★★★ Does your server speed really boost your crawl budget?
The crawl rate is periodically calculated by Google based on your site's responsiveness, which is the amount of crawl traffic it can handle. If the site responds quickly and consistently, the rate inc...
Daniel Waisberg Mar 03, 2021
★★★ What causes a sudden drop in crawl requests that could indicate a robots.txt issue or response time problem?
If you notice a significant drop in the total number of crawl requests, ensure that no one has added a new robots.txt file to your site, or that your site is not responding slowly to Googlebot....
Daniel Waisberg Mar 03, 2021
★★★ Does Server Response Time Really Influence Googlebot's Crawl Rate?
A consistent increase in average response time might not immediately affect your crawl rate, but it's a good indicator that your servers may not be handling the entire load. This can ultimately affect...
Daniel Waisberg Mar 03, 2021
★★★ Why can a 503 code on robots.txt block your site's entire crawl?
Your site is not required to have a robots.txt file, but it must return a successful 200 or 404 response when requested. If Googlebot encounters a connection problem like a 503, it will stop crawling ...
Daniel Waisberg Mar 03, 2021
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