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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★★ Is resubmitting your XML sitemap really a waste of time?
Resubmitting an XML sitemap without real changes is not a strong signal for Google. If you manually modify all the dates to force a recrawl, Google will detect that all the dates are identical and wil...
John Mueller Dec 18, 2021
★★★ Can a 503 error during migration really harm your SEO?
A 503 error lasting one or two hours during a server migration should have no impact on SEO. Google considers this a temporary error, retries after a few hours, and indexing is not affected if the sit...
John Mueller Dec 18, 2021
★★ Why is text content still vital for SEO indexing?
A page with minimal text content (such as an interface mainly comprised of HTML controls or images) poses difficulties for indexing. Bots require descriptive content to grasp the subject and purpose o...
Martin Splitt Dec 15, 2021
★★★ How is Googlebot's evergreen Chrome transforming the SEO landscape?
Googlebot is now using an up-to-date Chromium instance that is regularly updated (evergreen Chrome). This update was announced in May 2019 during Google I/O and significantly improves Googlebot's rend...
Martin Splitt Dec 15, 2021
★★★ How do HTML semantic tags impact your SEO success?
Google utilizes HTML semantics to grasp the structure of content: identifying sections, determining which part is most important, and understanding relationships between elements. Good HTML semantics ...
Martin Splitt Dec 15, 2021
★★★ Can Google Really Index JavaScript Content Correctly?
JavaScript content is indeed being indexed correctly by Google. The assertion that all JavaScript content would be invisible to search engines is outdated and incorrect....
Martin Splitt Dec 15, 2021
★★★ How Long Can Your Server Be Down Before Google Deindexes Your Site?
John Mueller explained during a webmaster hangout that from now on, a website that is down (server down problem) will be deindexed if the problem lasts "a couple of days" (so two days, roughly speakin...
John Mueller Dec 13, 2021
★★ Do URL parameters on images really hinder SEO?
Adding query parameters to image URLs (for cache invalidation, for instance) does not have a negative effect on SEO. However, frequently changing image URLs slows down their reindexing because Google ...
John Mueller Dec 10, 2021
★★ Does the 304 code really impact your crawl budget?
A 304 response (not modified) does not count against the crawl budget. Google can reuse this request to crawl something else on the site. The 304 code helps Google understand how often pages are updat...
John Mueller Dec 10, 2021
★★ Should you really add text to enhance the indexing of numerical data?
For pages that mainly feature numerical data, adding descriptive text will not impact how Google crawls and indexes those pages. Numbers are regarded as unique content. Indexing instead relies on the ...
John Mueller Dec 10, 2021
★★ Is it true that redirecting old image URLs is essential after an SEO migration?
Embedded images are often forgotten during migrations. Without redirecting old image URLs, Google has to find and re-index them, which takes a considerable amount of time. Setting up these redirects r...
John Mueller Dec 10, 2021
★★★ How does AdsBot affect your site's crawling budget?
The AdsBot robot shares the same crawling budget as Googlebot. An increase in AdsBot requests can reduce Googlebot's crawling of normal pages. This situation usually stabilizes quickly after new adver...
John Mueller Dec 10, 2021
★★★ Is it true that 'discovered and not indexed' signals a quality issue for a site?
For a reasonably sized site (25,000 pages), if the right URLs are showing up en masse as 'discovered and not indexed' rather than 'crawled and not indexed', it likely indicates a broader quality issue...
John Mueller Dec 10, 2021
★★★ Can multiple identical language versions actually hurt your SEO?
Creating numerous country versions for the same language (for example, several nearly identical English versions) complicates indexing and ranking. Google treats them as duplicate content. It's better...
John Mueller Dec 10, 2021
★★★ What happens when a 503 code lasts too long – does Google actually deindex your site?
For a website outage lasting more than a few days, the 503 code does not safeguard your indexing. After a few days, Google views this as permanent and removes the pages from its index. For long-planne...
John Mueller Dec 10, 2021
★★★ How is inclusive language affecting SEO indexing?
Google has started collaborating with the Search Ranking team to explore how new inclusive writing practices are managed at the indexing and ranking levels....
Bruno Cartoni Dec 07, 2021
★★★ How is Google adapting to inclusive writing in its SEO practices?
Google must ensure that inclusive writing is supported by its crawling, indexing, and ranking systems, and that it also displays inclusive results....
Zineb Ait Bahajji Dec 07, 2021
★★ How does Google's automatic keyword expansion affect your SEO strategy?
Google may automatically expand certain words into appropriate variations during indexing by removing punctuation if it does not serve as a natural word boundary but rather as an indicator of differen...
John Mueller Dec 07, 2021
★★ How does Google decide which pages to crawl first?
Google attempts to reprocess all pages at least every few months. Most pages are checked much more frequently, but crawling capacity is limited and Google has to prioritize which pages to explore....
John Mueller Dec 02, 2021
★★ How does Google determine indexing timelines for different domains?
Indexing time varies significantly from one domain to another. Google attempts to understand the overall context of a domain to determine where to allocate its crawling resources. A new, lesser-known ...
John Mueller Nov 26, 2021
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