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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★ Why Doesn't Google Index Every Page on Your Website?
John Mueller stated in a hangout that it's normal for Google not to index all pages of a website or XML Sitemap. However, he didn't explain why certain pages are left out :(......
John Mueller Jan 09, 2017
★★★ Can you really temporarily deindex a page with noindex without risks?
Google discourages using the noindex tag on a page just to show it on certain days. This requires re-crawling the page, which could delay its re-indexation and impact its ranking....
Google Jan 05, 2017
★★★ Does Google really prefer hreflang or IP redirection for multilingual sites?
Google recommends using hreflang markup to serve different content by region without considering different IPs for crawling, and to use x-default tags for global redirect pages....
Google Jan 05, 2017
★★★ Does content quality truly impact Google rankings?
All indexed content must be of high quality and relevant to the subject matter. This encourages users to return and recommend the content, even though it does not directly affect SEO rankings....
Google Jan 05, 2017
★★★ Should You Really Optimize Your Mobile and Desktop Sites Differently in 2017?
John Mueller indicated that it was important in 2017 to ensure that mobile site optimization was as good as desktop site optimization. This was in the context of the Mobile First index launch, logical...
John Mueller Jan 02, 2017
★★★ Should You Already Be Optimizing Your Site for Google's Mobile First Index?
Gary Illyes reminded (with a Japanese Googler) on Twitter that the "Mobile First" index was not yet live. Let's remember that nothing will really happen before - at least - the second quarter of 2017 ...
Gary Illyes Jan 02, 2017
★★★ How Can You Ask Google to Speed Up Your Site's Crawl in an Emergency?
John Mueller indicated in a forum that there is a procedure, through an appropriate form, that allows you to ask Google's "crawl" team to perform a specific crawl of your site or ask a question about ...
John Mueller Jan 02, 2017
★★★ Does disavowing links really take effect immediately after submission?
The disavow file is processed immediately upon submission, but the real effect depends on how quickly Google recrawls those specific pages....
John Mueller Dec 27, 2016
★★★ Is Google now indexing hidden CSS content in mobile-first?
In the context of mobile-first indexing, Google will treat hidden CSS content as part of the page's content, unlike before when such content could be ignored....
John Mueller Dec 27, 2016
★★★ Should you really fix all crawl errors in Search Console?
When it comes to crawl errors, you should only fix those that are relevant for SEO. Sitemaps can be divided to simplify management, but this does not affect Google's processing....
John Mueller Dec 27, 2016
★★★ Should you set your site's low-traffic pages to no-index?
For low-traffic pages, you can set them to no-index gradually or in bulk based on your preferences after testing, without negative impact....
John Mueller Dec 27, 2016
★★★ Will your desktop version be penalized if your mobile version is subpar?
With mobile-first indexing, desktop pages will be ranked based on the mobile version of the page. This means that the quality of the mobile version will influence the overall ranking....
John Mueller Dec 27, 2016
★★★ Are your crawling parameters unknowingly sabotaging your SEO?
To enhance crawling, ensure that your server has the necessary resources to provide a correct HTTP response. Avoid using restrictions in the robots.txt file that could prevent important pages from bei...
Google Dec 22, 2016
★★★ Does the length of URLs really influence Google rankings?
In the context of mobile-first indexing, URL length does not affect webpage rankings. The evaluation criteria remain the same, whether reviewed by a mobile or desktop crawler. However, excessively lon...
Google Dec 22, 2016
★★ Is Google really ignoring your internal links in mobile-first indexing?
Following the move to mobile-first indexing, internal links only available on the desktop version may not be taken into account. Using sitemaps is advisable to ensure the discovery of these pages....
Google Dec 22, 2016
★★★ Should you eliminate all PC-only content to avoid losing it in mobile-first indexing?
In the context of mobile-first indexing, mobile pages become the main basis for evaluation. Thus, content that exists only on PC pages is less likely to be considered or may not be evaluated at all. G...
Google Dec 22, 2016
★★★ Why are AJAX fragment meta-tags still blocking your indexing?
If the old AJAX crawl configuration is replaced, make sure to eliminate the fragment meta-tags so that the content is correctly indexed without waiting for server-side rendering from Google....
Google Dec 22, 2016
★★★ Should you really modify your canonical tags for mobile-first indexing?
Generally, it is not necessary to modify canonical or alternate tags with mobile-first indexing. If a page is properly set up with a canonical tag pointing to its desktop version, no changes are requi...
Google Dec 22, 2016
★★★ Can you really restore your site after it has been unindexed due to a DMCA complaint?
If a domain is unindexed due to a DMCA complaint, it is possible to submit a counterclaim to have the decision reviewed. It is important to follow the instructions provided on the help center for this...
John Mueller Dec 16, 2016
★★★ How does Google really detect duplicate sites across multiple domains?
Google detects duplicate sites if multiple domains use the same URL template and parameters, leading to the same content. To avoid indexing errors, ensure that each domain presents unique content and ...
John Mueller Dec 16, 2016
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