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 really make all recipe images indexable to perform well in SEO?
For a recipe site, it is strongly recommended to make images indexable. Users often search for recipes via Google Images. Moreover, Recipe structured data requires indexable images to display rich thu...
John Mueller May 15, 2020
★★ Should you disavow ghost backlinks that are only visible in Search Console?
Backlinks from empty pages that are only visible in Search Console and not in other SEO tools are likely due to a technical error (empty for users, full for Googlebot). There is no reason to disavow t...
John Mueller May 15, 2020
Should you encode non-ASCII characters in XML sitemap URLs?
URLs in an XML sitemap can contain non-ASCII characters. You just need to respect the encoding specified in the sitemap specification....
John Mueller May 15, 2020
★★ Can you really block Googlebot state by state in the U.S. without breaking everything?
If you need to block certain U.S. states (not the entire country), you can block Googlebot based on the IP geolocation of the state, but it's technically challenging because the state-IP mapping is no...
John Mueller May 15, 2020
★★★ Is it true that Googlebot crawls from the USA: how can you avoid the geo-IP cloaking trap?
Googlebot primarily crawls from the USA. If you must block content for US IPs for legal reasons, you must also block Googlebot; otherwise, it's cloaking. The rule: users located at the same location a...
John Mueller May 15, 2020
★★★ Are 500/503 errors lasting a few hours really invisible to your indexing?
Temporary server errors (500, 503) lasting a few hours are managed automatically by Google: systems wait and retry later. These errors are not reported in Search Console and do not affect indexing as ...
John Mueller May 15, 2020
★★★ Why does Google not index all your pages despite active crawling?
When Search Console shows a lot of 'Discovered - currently not indexed' or 'Crawled - currently not indexed' pages, it is often because Google's algorithms are not convinced by the overall quality of ...
John Mueller May 15, 2020
★★★ Why does Google only index one version when your country pages are nearly identical?
When two pages have identical or nearly identical content (same language, different countries), Google often chooses one as canonical, even with hreflang. Hreflang allows for swapping the displayed UR...
John Mueller May 15, 2020
★★ Do temporary 404 errors during a migration really kill your SEO?
If pages return temporary 404s during a migration (for a few days) before redirects are set up, Google will recrawl the URLs, see the redirects, and treat them normally. The impact on ranking will be ...
John Mueller May 15, 2020
★★★ Should you always enable loading='lazy' on all your images to boost SEO?
The HTML attribute loading='lazy' for images is strongly recommended for SEO. Img tags remain in the HTML, so Google can crawl and index images normally while speeding up page load for users. It’s a s...
John Mueller May 15, 2020
★★ Are jump links really useless for Google's crawling?
Internal anchor links (with #) are not crawled by Google because they point to the same page. However, Google recognizes them and can sometimes display them in search results to direct the user direct...
John Mueller May 15, 2020
★★ Should you develop unique content to effectively index various versions of the same service?
If you create separate pages for in-person and online courses (same educational content but different delivery methods), Google will index both pages because the distinction (online/offline) is signif...
John Mueller May 15, 2020
★★★ Does mobile-first indexing really impact your page rankings?
Mobile-first indexing is a purely technical process that determines which version (mobile or desktop) Google indexes. It does not involve any ranking advantages or penalties in search results, nor any...
John Mueller May 14, 2020
★★ Does Google flag missing images on mobile: Should you ignore these alerts if your mobile version is intentionally different?
Google may report missing images on mobile even if the webmaster considers this difference intentional and acceptable (e.g., fewer associated products displayed). If the mobile version aligns with you...
John Mueller May 14, 2020
★★ Should you really abandon the FAQ schema on single-question product pages?
You can mark each question of a FAQ on a dedicated page with FAQ schema. However, Google primarily displays the FAQ rich snippet when multiple questions are present on the same page. With only one que...
John Mueller May 14, 2020
★★ Is it true that mobile-first indexing is stuck: how long until automatic unlocking?
When a site receives a mobile-first block notification for desktop/mobile asymmetry, Google automatically reevaluates the site after correction. There is no manual re-test function, but the systems re...
John Mueller May 14, 2020
★★★ Should you merge two cannibalizing pages or let them coexist?
When faced with two competing pages on the same topic, merging via canonical is wise if they struggle to rank (boost visibility). Conversely, if both pages are already ranking in the 1st or 2nd positi...
John Mueller May 14, 2020
★★ Can you really combine canonical and noindex without risk?
Combining canonical and noindex on the same page is theoretically contradictory (one says 'index the other', the other says 'don’t index anything'). In practice, Google does not block this dual signal...
John Mueller May 14, 2020
★★ Why are multilingual footer links crucial on every page?
Placing links to language variants in the footer of every page (including blog, categories, products) helps both users and Google discover and associate translated versions. These links should not be ...
John Mueller May 14, 2020
★★★ Does mobile-first indexing really improve your ranking on Google?
Mobile-first indexing is a purely technical process for indexing content. It does not mean a better ranking in search results or priority in mobile results, contrary to a common misconception....
John Mueller May 14, 2020
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