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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★★ Should you keep your Google Ads pages separate from your SEO pages?
It is acceptable to have separate pages for Google Ads (with noindex) and pages for organic SEO. The pages can be blocked from organic search while still serving as advertising landing pages....
John Mueller Nov 20, 2021
★★★ How can you optimize internal linking to enhance your site's indexing?
Internal linking helps guide Google on which important pages to index. Linking from the homepage to priority pages (new products, new job offers) signals to Google to focus on these contents....
John Mueller Nov 20, 2021
★★ Why should you remove the sitemap from the old domain after a migration?
After a site migration, it's essential to remove the sitemap from the old domain 1-2 months later. Keeping the old site's sitemap creates a conflict as it signals to Google that the old URLs are still...
John Mueller Nov 20, 2021
★★★ Why doesn’t Google index all your pages?
Google never indexes 100% of a website's pages. On average, between 30% and 60% of a site's pages are indexed. Losing 100 indexed URLs per month on a site with 5000 pages is normal if new content is a...
John Mueller Nov 20, 2021
★★ How does Googlebot handle spider traps in modern SEO?
Googlebot detects spider traps (infinite calendars, endless pagination) by gradually crawling. After finding similar content across long chains, the systems slow down and then stop crawling that secti...
John Mueller Nov 20, 2021
★★ What unique SEO challenges do JavaScript PWAs bring?
PWAs that are solely based on JavaScript create additional technical challenges for SEO, particularly regarding rendering and indexing. This can involve significantly more work compared to a tradition...
John Mueller Nov 12, 2021
★★★ Does Google really slow down crawling on pages that are in prolonged no-index?
<p>When a page remains in no-index for an extended period, Google significantly slows down the crawling of that page. Once the page becomes indexable again, active resumption of crawling is required, ...
John Mueller Nov 12, 2021
★★★ Is it true that changing your URL could cost you valuable SEO data?
Changing URLs to force reindexing results in a complete loss of all historical information tied to the old URLs. Google no longer recognizes if there was a no-index tag, nor does it retain any data ab...
John Mueller Nov 12, 2021
★★★ Can canonical and hreflang tags actually work together on the same page?
A page can perfectly have both a canonical tag pointing to itself and alternate hreflang tags pointing to other language versions. The canonical tag confirms that this page is the preferred version, w...
John Mueller Nov 12, 2021
★★★ How do you choose between no-index and canonical for an effective SEO strategy?
The choice between no-index and canonical depends on the intent: use no-index if you absolutely want to prevent the content from appearing in search results, and canonical if you want to consolidate t...
John Mueller Nov 12, 2021
★★★ How can temporary internal linking boost your reindexing speed?
To speed up the reindexing of important pages, temporarily creating internal links from very significant pages (like the homepage) signals to Google that these pages are a priority and triggers faster...
John Mueller Nov 12, 2021
★★★ How does Googlebot's geographic limitations affect content indexing?
Google can only index the content visible to Googlebot, which typically crawls from the United States and without cookies. If content is displayed solely through geographic personalization or cookies,...
John Mueller Nov 12, 2021
★★★ Should you combine no-index and canonical tags to enhance your SEO signals?
It is possible and even beneficial to combine no-index and canonical on the same page. This helps Google understand that the page should not be indexed while transferring certain signals (like externa...
John Mueller Nov 12, 2021
★★★ Why doesn't a reduced crawl rate from Google lead to the deindexing of your pages?
If Google reduces the crawl frequency of a site, it does not cause the deindexing of already indexed pages. Pages do not expire just because they are not recrawled. Therefore, a decline in indexed pag...
John Mueller Nov 12, 2021
★★★ Why should you avoid using canonicals between language versions?
The canonical tag should never point from one language version to another (for example, from the French page to the English page) because these are fundamentally different pages. Each language version...
John Mueller Nov 12, 2021
★★ Does response time really impact how Google crawls your site?
<p>For a news website, the importance of response time depends less on the type of site and more on the volume of URLs that Google needs to crawl daily. A site with 10,000 pages crawled each day can t...
John Mueller Nov 12, 2021
★★★ Why does the crawl rate take longer to recover than to decline?
Google's systems are very responsive in reducing the crawl rate when response time problems occur, but they are much slower to restore it once the problem is fixed. Generally, you need to wait a week ...
John Mueller Nov 12, 2021
★★ Why does Google keep crawling old mobile subdomains?
After redirecting a mobile subdomain (m-dot) to the main domain, Google might continue to crawl the old mobile domain for a very long time, sometimes for several years. This is normal and should not b...
John Mueller Nov 12, 2021
★★ Should you use the form to boost your crawl rate?
For significant sites that have improved their response times, there is a form in the Search Console help center that allows you to request that the Googlebot team manually increase the crawl rate. Th...
John Mueller Nov 12, 2021
★★★ Why is a 500-millisecond response time essential for effective SEO crawling?
A server response time of 500 milliseconds is generally good for crawling medium-sized sites. For very large sites with millions of URLs, an even faster response time is recommended to allow for effic...
John Mueller Nov 12, 2021
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