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 we rethink our SEO testing approach with Google's latest methods?
Google employs two testing methods: live experiments on real user segments for adjustable interface and ranking changes, and evaluations by human raters for modifications that require a complete rebui...
Gary Illyes Aug 19, 2021
★★★ Why should you rely on Search Console instead of the site: command?
To find out how many pages Google has indexed on your site, you should use Google Search Console rather than the site: query. It is the official and reliable tool to obtain this information....
John Mueller Aug 17, 2021
★★★ Is it true that the site: command isn't reliable for evaluating indexing?
The number of pages displayed in a site: query doesn't necessarily reflect the actual number of pages indexed by Google. There's no need to worry about the counts shown in a site: query....
John Mueller Aug 17, 2021
★★★ Why does Google recommend Search Console for diagnosing indexing issues?
Google Search Console is a free tool that website owners can use to gain insights into how Google Search views their site, including the number of pages currently indexed and how they appear in the re...
John Mueller Aug 17, 2021
★★ How Does Google Really Handle CDNs When Facing a 504 Error?
Google does nothing special for 504 errors and does not automatically try to fetch from the origin server instead of the CDN. Google accesses the domain name and uses the resolved IP, without distingu...
John Mueller Aug 14, 2021
★★★ How does Google really handle 500 errors?
Google retries pages that return 500 errors. If the errors persist, Google slows down the crawling of the entire site. If 500 errors continue, Google eventually deindexes those URLs. A 500 error rate ...
John Mueller Aug 14, 2021
★★★ Does hreflang really weaken your SEO in competitive markets?
With hreflang, each country URL must be indexed and ranked separately. If you create multiple country versions of the same page in a highly competitive market, it lessens the relative strength of your...
John Mueller Aug 14, 2021
★★★ Why does Google take so long to reassess a website's quality after de-indexing?
After massively de-indexing low-quality pages to improve the overall quality of a site, it takes approximately 6 months or more for Google to recalculate the site's quality. This timeframe is necessar...
John Mueller Aug 14, 2021
★★★ Could non-indexing signal a deeper quality issue with your site?
For small sites, if a significant percentage of pages is not indexed, the issue is usually related to the overall quality of the site rather than technical problems. Modern CMSs are technically sound,...
John Mueller Aug 14, 2021
★★★ Why Doesn’t Google Index All Your Pages?
It is completely normal for Google not to index every single page of a website. Indexing naturally fluctuates, and no website, regardless of its size, sees 100% of its pages indexed. This is not neces...
John Mueller Aug 14, 2021
★★★ Is HTTPS truly essential for ranking well on Google?
Using HTTPS is a fundamental criterion for Page Experience. The page must be served over HTTPS, the canonical tag must point to the HTTPS version, and HTTP traffic must be automatically redirected to ...
Patrick Kettner Aug 10, 2021
★★★ Does Google really allow certain interstitials on your site and why?
Legal interstitials are not penalized: privacy policies, cookie notifications, login prompts for sites that require them, or content that necessitates a subscription. Googlebot recognizes them as legi...
Patrick Kettner Aug 10, 2021
★★★ How do intrusive interstitials affect your SEO?
Googlebot detects intrusive interstitials that block the page and create a poor experience. It's important to avoid covering the entire page with irrelevant content or forcing the closure of an inters...
Patrick Kettner Aug 10, 2021
★★ How does changing the URL of an optimized image hasten its update in the index?
Google crawls images less often than HTML pages. If you optimize an image (compression), use a new URL to prompt Google to detect the change more quickly when crawling the HTML page....
John Mueller Aug 06, 2021
★★★ Should you unlock JavaScript and CSS for Google?
JavaScript and CSS files should not be blocked by robots.txt. Google needs them to render pages and check mobile compatibility. These files will not be indexed individually but must be accessible for ...
John Mueller Aug 06, 2021
★★★ What makes your pages remain invisible on Google?
If your pages take more than two weeks to be indexed, it is generally due to technical issues (difficult crawling) or quality issues (content that is not interesting to Google). Assess whether your si...
John Mueller Aug 06, 2021
★★ Are Core Web Vitals really based on actual user data?
For Core Web Vitals, Google uses metrics from real users, regardless of what is indexed. Optimizing images improves user experience even if Google hasn’t recrawled the new versions yet....
John Mueller Aug 06, 2021
★★★ Does temporary deindexing really impact your SEO ranking?
If a legitimate site is temporarily deindexed for technical reasons (a few hours or days), it automatically corrects itself and is not held against the site in the long term....
John Mueller Aug 06, 2021
★★★ Why isn't robots.txt enough to stop indexing on Google?
<p>Robots.txt prevents the crawling of a URL but does not stop its indexing. Google may index a URL blocked by robots.txt based solely on its URL and the link anchors pointing to it. To prevent indexi...
John Mueller Aug 06, 2021
★★ How does Google's 'Universal Mixer' influence your SEO strategy?
Google uses a system called 'Universal Mixer' that receives results from all the different indexes (web, images, videos, news) and combines them together. Each index assigns a score to its results tha...
Gary Illyes Jul 29, 2021
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