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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★★★ Does Google really have a single index for all countries?
Google does not have different indexes based on countries. There is no content indexed differently according to location. Rankings may differ between countries, and with hreflang, Google can swap URLs...
John Mueller Mar 19, 2021
★★★ How can you avoid doorway page penalties when managing multiple sites with duplicate content?
For multiple sites with the same content (e.g., commercial sites), use rel=canonical to point to a central indexed version. This avoids spam issues (doorway pages), concentrates strength on a single s...
John Mueller Mar 19, 2021
★★ Should you really avoid staged deployments when transitioning to mobile-first indexing?
During a staged rollout, avoid being partially indexed in both versions (old and new). If possible, implement the change all at once rather than gradually to minimize SEO fluctuations. A gradual deplo...
John Mueller Mar 19, 2021
★★★ How can an inaccessible video thumbnail undermine your visibility in search results?
You must provide a high-quality thumbnail at a URL accessible to Google. If a thumbnail is not accessible, your page may not appear in video features. For instance, if the thumbnail URL is blocked by ...
Danielle Marshak Mar 17, 2021
★★★ How does Google really index your online videos?
When Google talks about indexing a video or displaying a video result in search, it actually refers to the combination of that video and the web page it resides on....
Danielle Marshak Mar 17, 2021
★★★ Why does Google refuse to index your videos if they're not publicly accessible on the web?
To be indexed by Google, videos must be publicly available on the web. If your videos are part of an app, make sure that each video also has a corresponding web page with a URL accessible by Google....
Danielle Marshak Mar 17, 2021
★★ How does Google really index videos from millions of websites?
Google indexes videos from millions of sites across the web, covering topics ranging from news and sports to shopping and education. These sites include individual publishers as well as large platform...
Danielle Marshak Mar 17, 2021
★★★ Are video sitemaps really effective for indexing your content?
Video sitemaps are another way to help Google find videos associated with your site's pages, and they can also include metadata tags to help Google understand the content of the videos....
Danielle Marshak Mar 17, 2021
★★★ How does Google truly identify videos on your web pages?
When Google crawls the web, it identifies videos on web pages using different signals, including page data such as video HTML tags and structured data, as well as separately submitted data like video ...
Danielle Marshak Mar 17, 2021
★★★ Should You Really Use Noindex Rather Than Robots.txt to Deindex a Page?
John Mueller explained on Twitter that when you want to deindex a page that has been previously indexed by the search engine, you need to use the "noindex" meta robots tag and not the robots.txt file....
John Mueller Mar 15, 2021
★★★ Is it true that Google really indexes hidden content in responsive CSS?
If an element is in the DOM but hidden on mobile via responsive CSS, Google can still index it. Google attempts to determine which parts are visible and values them for ranking, but the content in the...
John Mueller Mar 12, 2021
★★ Can reducing page size really enhance your crawl budget?
If you improve Core Web Vitals by reducing page size, it can enhance your crawl budget. If Google can access HTML pages faster and render them more quickly, it can crawl more of them. However, it also...
John Mueller Mar 12, 2021
★★★ Should you really delete or redirect expired content instead of keeping it indexable?
For classified sites with expired content, either redirect to the category page (soft 404) or return a 404 error. Both options remove the page from search results. Do not keep old pages labeled 'expir...
John Mueller Mar 12, 2021
★★ Do Core Web Vitals Really Influence Google's Crawl Budget?
If Google can access HTML pages faster due to improved Core Web Vitals, it may potentially crawl more. This also depends on the site's capacity and Google's demand....
John Mueller Mar 12, 2021
★★ Is it true that AMP or canonical really captures the SEO signals?
Google transfers information and signals from AMP to the canonical URL. For Core Web Vitals, Google tracks the canonical and uses the metrics based on it....
John Mueller Mar 12, 2021
★★★ Should you block internal search pages to prevent indexing of infinite space?
The issue with internal search pages is that they often create an infinite space: any word can generate a page. While some may resemble useful category pages, the others should be blocked to prevent t...
John Mueller Mar 12, 2021
★★★ Is it true that mobile hidden content is really indexed by Google?
If an element is in the DOM but hidden in mobile responsiveness, Google can still retrieve it for indexing. Google tries to determine which parts are visible for ranking but understands mobile interac...
John Mueller Mar 12, 2021
★★★ Is it really necessary to index the internal search pages on your site?
Internal search pages can be indexed if they are relevant and useful to users, similar to category pages. It is recommended to only select certain important queries and block the rest to avoid an infi...
John Mueller Mar 12, 2021
★★★ Do words in the URL really influence Google rankings?
Google uses words in the URL as a very, very slight factor. It is mainly used during the very first discovery of a URL, before having access to the content. Once the content is crawled and indexed, th...
John Mueller Mar 12, 2021
★★ Why does the Search Console's internal links report show only a sample?
The internal links report in Search Console is based on a sample of pages, not all indexed pages. It does not match the scope of the index coverage report and serves to give an idea of the links that ...
John Mueller Mar 12, 2021
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