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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★★ What happens when you shift from formal to informal language in your content?
Transforming all the content of a website from formal address to informal (from 'Sie' to 'Du' in German) is not an SEO issue at all. Google simply recognizes that the text has changed and reindexes th...
John Mueller Oct 07, 2021
★★★ Is Noindex Enough, or Should You Use Noindex+Nofollow to Block SEO Signals?
The difference between noindex alone and noindex+nofollow is minimal for Google. With just noindex, Google does not index the pages and generally does not see the links. Noindex+nofollow ensures that ...
John Mueller Oct 07, 2021
★★ How can you get real-time LCP data using Google Analytics?
Although canonical data from the Search Console is published every 28 days, you can gain insight into your LCP scores by using PerformanceObserver with Google Analytics. Create a custom event to get L...
Patrick Kettner Oct 05, 2021
★★ How do DNS prefetch and preconnect transform technical SEO?
For resources hosted on other domains like CDNs, add DNS prefetch or preconnect metadata. These hints allow the browser to perform DNS resolution and establish connections in the background, paralleli...
Patrick Kettner Oct 05, 2021
★★★ Does URL Length Really Impact Your SEO Rankings?
John Mueller explained on Twitter that Google uses URL length as an ultra-light criterion in the context of defining a canonical page (if it discovers duplicate content): "We use URL length with a ver...
John Mueller Oct 04, 2021
★★★ Should You Block Sponsored Links from Indexing in Your E-commerce Category Pages?
Recently, John Mueller has been actively communicating about category pages, particularly on e-commerce sites (see previous weeks). This week, he responded on Twitter to a question about integrating (...
John Mueller Oct 04, 2021
★★ How do noindex tags affect the de-indexing timeline for large websites?
For a large website, processing noindex tags can take up to a month. De-indexing usually happens in a gradual and progressive manner, not all at once....
John Mueller Oct 01, 2021
★★★ Do Pages Blocked by robots.txt Really Affect Your SEO?
Pages blocked by robots.txt that show up as indexed in Search Console do not count against site quality. It is mainly a warning to inform owners. If you do not care about these pages, just leave them ...
John Mueller Oct 01, 2021
★★★ Does a temporary noindex really affect Google's recrawl?
Adding and then removing a noindex tag will not have a negative long-term effect. Google will continue to crawl the URL normally, especially if you add internal links to those pages. The crawl rate ma...
John Mueller Oct 01, 2021
★★★ Why is noindexing empty internal search pages essential for SEO?
For empty internal search result pages, Google's preference is to recognize them, ideally through a noindex tag. Sending users to empty pages via Google would be a poor user experience....
John Mueller Oct 01, 2021
★★★ Why does Google prioritize static content for the ranking of interactive pages?
For interactive content such as quizzes or surveys, the ranking is based on the static content that appears on the page. Googlebot does not attempt to fill out forms to discover content....
John Mueller Oct 01, 2021
★★★ Why Does Googlebot Ignore 'See More' Buttons in JavaScript?
Googlebot does not use 'See More' buttons in JavaScript. Content dynamically loaded through these buttons will not be indexed. Google recommends using traditional pagination instead of this type of bu...
John Mueller Oct 01, 2021
★★★ Why does Google's quality evaluation take so long?
Google's quality evaluations take a considerable amount of time. If you deindex 10% of your site, it won't be reevaluated the following week, but rather over several months....
John Mueller Oct 01, 2021
★★★ Is it true that having more pages leads to better indexing?
Just because a site has many pages doesn’t mean Google will crawl and index them all. If Google isn’t convinced by the quality of the initial pages, its systems won’t take the time to index millions o...
John Mueller Oct 01, 2021
★★ Can a sitemap really stop Google from crawling all your pages?
Removing pages from the sitemap file only aids in additional crawling, but it does not prevent Google from crawling those pages and does not remove them from the index. The sitemap does not stop natur...
John Mueller Oct 01, 2021
★★★ Does it really take a year for PageRank to fully transfer after a 301 redirect?
After about one year of a 301 redirect, the transfer of signals (PageRank) to the new URL is complete. You can then remove the redirect. This duration is indicative (it could be faster), but one year ...
Google Sep 30, 2021
★★★ What are the reasons your content isn’t being properly indexed by Google?
The majority of reported non-indexing cases are due to: 1) Google not considering the content important/enough priority, 2) Temporary crawl errors, 3) Manual actions (like active removal requests). Ra...
Google Sep 30, 2021
★★ Why does Google keep crawling old URLs even after a redirect?
Even after 1 year of redirection and complete transfer of signals, Googlebot continues to request the old URL. This is normal: Google periodically checks for new content or whether the redirect is sti...
Google Sep 30, 2021
★★ How can you effectively index content in JavaScript popups?
For content displayed via JavaScript popups without a dedicated URL, indexing is difficult. Google recommends that each page be accessible through a link with a unique URL (according to general guidel...
Google Sep 30, 2021
★★ Is it true that Google migrates sites to mobile-first indexing in massive waves?
The MFI migration occurs in batches of several million sites at a time, not site by site. If your site hasn't been migrated yet while being technically ready, that's normal. Just wait for your turn; n...
Google Sep 30, 2021
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