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.
Quick SEO Quiz

Test your SEO knowledge in 5 questions

Less than a minute. Find out how much you really know about Google search.

🕒 ~1 min 🎯 5 questions
★★ Does hosting migration always slow down Google's crawl?
Crawl slowdown during a hosting change is independent of the type of change being made. Whether you switch to a local provider or relocate to another country, Google's behavior remains the same....
John Mueller Feb 23, 2022
★★★ Do Core Web Vitals Really Influence Your Pages' Indexing?
John Mueller explained during a webmaster hangout that having a good Core Web Vitals "score" (web performance, page loading time) didn't necessarily help a page get better indexed by the search engine...
John Mueller Feb 21, 2022
★★ Should you really redirect the old sitemap with a 301 or submit the new one directly instead?
A 301 redirect from the old sitemap to the new one is acceptable and causes no problems. However, it is recommended to also submit the new URL directly in Search Console or robots.txt....
John Mueller Feb 18, 2022
★★★ Should you really index every page on your website?
Google has no specific ratio regarding how many pages a site should have or how many should be indexed. Generally, fewer pages with more concentrated value perform better than many diluted pages....
John Mueller Feb 18, 2022
★★ Does Googlebot really index all your infinite scroll content?
Googlebot uses a very tall viewport during rendering and can partially trigger infinite scroll. This may load 2-3 pages but not everything. You need to test with the URL inspection tool to see what ge...
John Mueller Feb 18, 2022
★★ Does internal linking really take effect instantly after Google recrawls your pages?
Internal linking changes are taken into account immediately as soon as Google recrawls and reindexes the affected pages. There is no additional artificial latency....
John Mueller Feb 18, 2022
★★★ Does your server speed actually control how often Google crawls your site?
Google balances crawl demand (site quality, frequency of changes) with server limitations (response time, server errors). Slow response time or frequent 5xx errors reduce crawl speed....
John Mueller Feb 18, 2022
★★ Does Google really slow down crawling after a hosting migration, and how long does it last?
When you change hosting or CDN providers, Google automatically reverts to a cautious crawl rate and then gradually increases it over several weeks until it reaches a safe level again....
John Mueller Feb 18, 2022
★★ Can you really control PDF indexing through HTTP headers?
It is possible to set a canonical tag on a PDF via HTTP headers. You can also use noindex in headers for PDF files....
John Mueller Feb 18, 2022
★★ Is a 97% crawl refresh rate actually a positive sign for your website's health?
For an established site growing slowly, it's normal for 97% of crawl to be refresh and only 3% discovery. This is different for news sites or classifieds with lots of new content....
John Mueller Feb 18, 2022
★★★ Should you worry if Google isn't crawling all your pages?
It is completely normal for Google not to crawl and index all pages on a website. The 'Discovered - currently not indexed' status can last indefinitely. For a new site with lots of content, this is ex...
John Mueller Feb 18, 2022
★★★ Is internal linking really the most critical factor for SEO success?
Internal linking is one of the most important elements of a website. It's an excellent way to signal to Google what you consider important. Temporary links from your homepage help with fast crawling a...
John Mueller Feb 18, 2022
★★★ Does Google really measure crawl speed and Core Web Vitals the same way — and why should you care?
Crawl speed measures only the time to fetch a URL from your server, not the rendering in the browser. This is different from Core Web Vitals, which include JavaScript, external resources, and complete...
John Mueller Feb 18, 2022
★★★ Does Google's Indexing API really work for all types of content?
The Indexing API only works for job postings and broadcast events. Using it for other content won't cause any negative issues, but it won't accomplish anything either....
John Mueller Feb 18, 2022
★★★ Is the crawl rate parameter really a ceiling rather than something Google will try to maximize?
The crawl rate parameter in Search Console is a maximum not to be exceeded, not a target to achieve. It is useful for reducing crawl, not for increasing it....
John Mueller Feb 18, 2022
★★★ Can You Safely Change Your Title Tags Every Day Without SEO Risks?
John Mueller explained during a webmaster hangout that there is no particular problem with modifying a Title tag every day if necessary. However, Google is not guaranteed to pick up this tag daily in ...
John Mueller Feb 14, 2022
★★★ Are SEO technical fundamentals really as critical as everyone claims they are?
Title tags, meta descriptions, canonical URLs, real links with href attributes, heading structure, and sitemaps remain fundamental technical elements for SEO. Their absence or poor implementation can ...
Martin Splitt Feb 09, 2022
★★★ Should you really block pages with robots.txt if Google can index them without any content?
Pages blocked by robots.txt can be indexed without content because Google cannot crawl them. The rel canonical and noindex directives are ignored on these pages. These URLs generally do not appear in ...
John Mueller Feb 04, 2022
★★★ Should you worry about changing page titles frequently—or is Google totally fine with it?
Changing page titles daily (for example to update prices) has no particular SEO impact. Google doesn't give special weight to titles that change frequently. The main challenge is that Google may not r...
John Mueller Feb 04, 2022
★★★ Are backlinks to your non-indexed pages really wasting your SEO potential?
If Google decides not to index a page, it will not transfer the value of the links pointing to that page to the rest of your site. Without an indexed destination for these links, Google cannot do anyt...
John Mueller Feb 04, 2022
🔔

Get real-time analysis of the latest Google SEO declarations

Be the first to know every time a new official Google statement drops — with full expert analysis.

No spam. Unsubscribe in one click.