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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★★ Can your sitemap really kill your crawl budget?
A sitemap with incorrect modification dates can lead to the deactivation of the update signal, which means that these URLs may not be crawled as frequently....
John Mueller Jul 11, 2019
★★★ Can empty pages be indexed if they offer user value?
Pages without current content that are helpful to users can be kept in the index if they provide some value. The key is to ensure they do not disappoint the user....
John Mueller Jul 11, 2019
★★★ Does Google really crawl some URLs only once every six months?
Google classifies URLs according to the presumed frequency of their changes. URLs that are rarely modified may be crawled once every six months....
John Mueller Jul 11, 2019
★★★ Should you really point the canonical tag to the desktop version in a mobile-first world?
With mobile-first indexing, Google uses the mobile version as the canonical version for indexing. The rel='canonical' link should point to the desktop version to maintain the relationship between the ...
John Mueller Jul 11, 2019
★★ Is Google Search Console really using an outdated version of Chrome for rendering?
Google Search Console tools currently use an outdated version of Chrome for rendering. An update is planned to reflect the version used by the crawlers....
John Mueller Jul 11, 2019
★★★ Why does it take Google so long to recognize a corrected canonical tag?
Google takes canonical tags seriously. If they are corrected after an initial incorrect indexing, it can take time for the changes to be recognized....
John Mueller Jul 11, 2019
★★★ Does lazy loading really block the indexing of your images in Google?
For images deferred via lazy loading, ensure that Googlebot can find the img element during page rendering. Only images that are useful for search traffic should be indexed....
John Mueller Jul 09, 2019
★★ Can you rank without visible content to Googlebot through backlinks?
Blocking with robots.txt prevents Google from seeing the content of the page, making it difficult to evaluate for query relevance. However, highly referenced pages can still appear in the search resul...
John Mueller Jul 09, 2019
★★★ Should you really place hreflang on non-canonical URLs?
There's no need to use HREF lang on non-canonical URLs since they do not show up in search results. Any hreflang annotation associated with a non-canonical URL will not be utilized....
John Mueller Jul 09, 2019
★★★ Why does Google advise against automatic language redirects on multilingual websites?
Avoid automatic language redirects and use HREF lang annotations to allow Google to access and index page versions in different languages....
John Mueller Jul 09, 2019
★★★ Can you really escape cloaking by showing Google more content than your visitors?
With the flexible sampling approach, you can show the entire content to Google while presenting a limited version to human users, without being considered cloaking....
John Mueller Jul 09, 2019
★★ Does changing a website's owner really affect its SEO?
A website ownership change generally does not affect how the site is indexed if the content remains largely the same....
John Mueller Jul 09, 2019
★★★ Will the Search Console API finally open data to third-party SEO platforms?
Google is working on integrating Search Console data into third-party platforms via a future API, allowing users to access information such as click-through rate, impressions, and indexing directly wi...
Martin Splitt Jul 03, 2019
★★★ How Long Does a Successful SEO Migration Actually Take?
John Mueller mentioned during a webmaster hangout that if everything was done properly on a website, a migration could be very quick in terms of SEO, in the order of a few days (a day or two, accordin...
John Mueller Jul 02, 2019
★★★ Do XML Sitemaps Really Impact Your Site's Ranking?
Gary Illyes indicated on Twitter that the content of XML Sitemap files did not impact a site's rankings in the search engine's results....
Gary Illyes Jul 02, 2019
★★★ Does the mobile version of your site really determine your desktop ranking?
With mobile-first indexing, only the mobile version of the page is indexed and used for search results, both mobile and desktop. This means that content present only on mobile can impact results for b...
John Mueller Jun 28, 2019
★★★ Should you really return a 404 or 410 for expired job postings?
For pages of expired job listings, it is appropriate to return a 404 or 410 status. The indexing API can also be used to indicate that a job is no longer available....
John Mueller Jun 28, 2019
★★★ Does lazy loading really kill your image indexing?
To use deferred image loading without affecting indexing, adopt research-compatible deferment methods, such as the specific Chrome attribute for lazy loading....
John Mueller Jun 28, 2019
★★★ Why does Google refuse to index URLs with hashes?
Google recommends using the pushState feature for URLs as it allows for proper indexing of routes. Hash-based URLs are not indexed by Google....
Martin Splitt Jun 27, 2019
★★★ Does Googlebot really execute JavaScript as well as a modern browser?
Googlebot executes JavaScript, which means it can see and index your dynamic content unless JavaScript or network errors prevent access to that content....
Martin Splitt Jun 27, 2019
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