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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★★★ Why doesn't Google canonicalize URLs with fragments in sitelinks and rich results?
Google normally canonicalizes URLs with fragments (#) in standard search results, but not in sitelinks or rich results (like FAQs). In these cases, the URL with the fragment is recorded as it is in th...
Anonyme (金谷武明) Jun 04, 2020
★★★ Should you really index all category pages to optimize your crawl budget?
Google does not recommend using noindex on category or listing pages to optimize crawl. Google prefers to crawl and index all pages to understand the site structure and display the most relevant pages...
金谷武明 Jun 04, 2020
★★ Are Search Console tools really enough to solve your indexing problems?
To resolve indexing issues, check the registration in Search Console, submit an indexing request via the URL Inspection Tool, and send an XML sitemap. If the problem persists, provide detailed screens...
金谷武明 Jun 04, 2020
★★★ Is it true that mobile accordion hidden content is indexed as visible content?
With Mobile-First Indexing, hidden content within mobile accordions is indeed recognized by Google. The handling of accordion content on PC no longer impacts indexing as Google now crawls with the mob...
金谷武明 Jun 04, 2020
★★★ Should you really stop placing category pages in noindex?
Google advises against using the noindex tag on category, author, or list pages (for example, in WordPress). Allowing Google to crawl and index all pages helps the algorithm better understand the site...
Anonyme (金谷武明) Jun 04, 2020
★★★ What happens when Google occasionally indexes HTTP instead of HTTPS even after an SSL migration?
If HTTP and HTTPS coexist without redirection or canonical, Google may index the HTTP version instead of HTTPS. To correct this, implement a 301 redirect from HTTP to HTTPS and/or add a rel=canonical ...
Anonyme (金谷武明) Jun 04, 2020
★★ Does the HTTP header rel=canonical really work to manage duplicate content?
The rel=canonical attribute specified via the HTTP header is still recognized and effective. Google recommends using it if pages (like PDFs) are duplicated across multiple domains (separate PC and mob...
Anonyme (金谷武明) Jun 04, 2020
★★★ Can Google really delay Mobile-First Indexing indefinitely?
The forced migration of all sites to Mobile-First Indexing, initially planned for September 1, 2020, may be postponed. Google is re-evaluating this date due to the COVID context and will communicate a...
Anonyme (金谷武明) Jun 04, 2020
★★★ Should you still optimize rel=next/prev tags for pagination?
Google no longer uses rel=next/prev tags for pagination. There is no specific signal to send. All paginated pages can be indexed normally. The XML sitemap should contain important pages, not necessari...
金谷武明 Jun 04, 2020
★★★ Why does Search Console still show 'PC Googlebot' on recent sites when Mobile-First Index is supposed to be the standard?
Newly indexed sites since July 2019 are supposed to be on Mobile-First Index by default. If Search Console shows 'PC Googlebot', it’s likely a display bug in the interface, not a real issue. Check ser...
金谷武明 Jun 04, 2020
★★★ Why is Google delaying the complete transition to the Mobile-First Index?
The full migration to the Mobile-First Index, initially scheduled for September 1st, may be postponed due to the health situation. Google will announce the final date later....
金谷武明 Jun 04, 2020
★★ Should you really submit all paginated pages in the XML sitemap?
For a large site with pagination, it is not necessary to send all pagination pages (page 2, 3, 100…) in the XML sitemap. Google recommends only submitting important pages. Since the rel=next/prev attr...
Anonyme (金谷武明) Jun 04, 2020
★★ Why are your pages still not indexed after 60 days in Search Console?
If a page is not indexed after 60 days despite being submitted via Search Console, you should check that the property is properly registered, that the URL Inspection Tool has been used (clicking 'Requ...
Anonyme (金谷武明) Jun 04, 2020
★★★ Are mobile and desktop accordions really neutral for SEO?
Google recognizes and correctly indexes hidden content in accordions, whether on mobile or desktop. With Mobile-First Indexing, hidden content on desktop has no impact on indexing because Google mainl...
Anonyme (金谷武明) Jun 04, 2020
★★ Does the number of JavaScript files really slow down Google indexing?
Google renders all JavaScript files on a page in a single rendering pass, not file by file. The number of JS files does not proportionally increase the rendering delay in the indexing process....
金谷武明 Jun 04, 2020
★★★ Is it really necessary to combine both 301 redirections AND canonical tags for an HTTPS migration?
During an HTTP to HTTPS migration, it is essential to implement both 301 redirections AND canonical tags pointing to HTTPS to clearly indicate to Google which version is canonical....
金谷武明 Jun 04, 2020
★★★ Does temporary removal in Search Console really block PageRank?
Temporary removal in Search Console only hides the page from search results, without altering its indexing. Google continues to crawl, index, and pass PageRank through the links on this page. The remo...
John Mueller May 29, 2020
★★★ Why does Google sometimes ignore your rel=canonical tag?
Google does not guarantee indexing the URL indicated by rel=canonical. Canonicalization combines multiple signals: redirects, rel canonical, internal and external links, sitemaps, and other factors. I...
John Mueller May 29, 2020
★★★ Can you really display different content on mobile and desktop without facing penalties?
Google indexes the mobile version of the content. Displaying slightly different content between mobile and desktop is acceptable, unless it is malicious cloaking (e.g., comics on mobile, adult content...
John Mueller May 29, 2020
★★ Will Google introduce accelerated validation for your content overhauls in Search Console?
Google is considering extending the validation process for fixes in Search Console (currently limited to technical issues and structured data) to content overhauls. This would trigger expedited re-cra...
John Mueller May 29, 2020
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