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
★★★ Is it true that having different mobile and desktop content still gets penalized by Google after the Mobile-First Index?
Having significantly different content between the mobile and desktop versions of the same URL can cause indexing problems, even after migration to the Mobile-First Index. The main content should be i...
Google Apr 22, 2021
★★ Should you really remove all URL parameters from your pages?
It is recommended to minimize the use of unnecessary URL parameters and adopt a clear URL structure. Unused parameters should not remain in the URL to improve crawl management....
Google Apr 22, 2021
★★★ Does the number of noindex pages really impact SEO rankings?
The number of noindex tags on a site has no impact on rankings in search results. There are no limits or penalties related to the number of noindex pages....
Google Apr 22, 2021
★★★ Does submitting an URL in Search Console really speed up indexing?
The URL submission feature in Search Console is not designed to speed up indexing. It simply notifies Google of the URL but does not guarantee a rapid indexing....
Google Apr 22, 2021
★★★ Why does redirecting from HTTPS to HTTP paralyze canonicalization?
An incorrect redirection from HTTPS to HTTP can prevent Google from resolving canonicalization issues. It is crucial to redirect HTTP to HTTPS and not the other way around....
Google Apr 22, 2021
★★ Is it really necessary to standardize final slashes in your URLs?
Google can choose different canonical versions (with or without final slash) if they are not explicitly specified. It is recommended to establish a consistent rule and indicate it through the canonica...
Google Apr 22, 2021
★★ Is Google really struggling to differentiate between subdomains and main domains?
Google may have trouble distinguishing whether a subdomain is a separate site or part of the main domain. It's advisable to clarify the structure and use canonical tags if necessary to indicate the re...
Google Apr 22, 2021
★★★ How does redirecting from HTTPS to HTTP potentially derail your indexing?
An incorrect redirect from HTTPS to HTTP (instead of HTTP to HTTPS) can prevent indexing problem resolution and slow down the implementation of fixes....
Google Apr 22, 2021
★★★ Is it really possible to overlook the desktop version with mobile-first indexing?
With mobile-first indexing, Google uses the mobile version for ranking, but this does not mean that the desktop version can be neglected. The main content must be identical on both versions....
Google Apr 22, 2021
★★ Do 404 pages in a site's structure really hinder crawling?
A directory structure with intermediate 404 pages does not directly affect crawlability. The key is to ensure that these empty pages are not unnecessarily linked within the internal structure of the s...
Google Apr 22, 2021
★★★ Does the indexing API really ensure your pages are indexed immediately?
Submitting a URL via the indexing API or Search Console does not lead to immediate indexing. These tools are not designed to force rapid indexing; this is the expected behavior....
Google Apr 22, 2021
★★★ Should you really declare a canonical tag on all your pages?
Even without any apparent issues, it is recommended to explicitly specify canonical tags to avoid Google selecting an incorrect URL as the canonical version....
Google Apr 22, 2021
★★ Do 404 Pages in Your Structure Really Kill Your Crawl Budget?
Having empty pages (404) in a directory structure does not directly affect crawlability. The important thing is to avoid errors in internal links pointing to these empty pages....
Google Apr 22, 2021
★★ Should you really add a canonical tag on ALL your pages, even the main ones?
It is recommended to specify canonical tags on all pages, including main pages, to avoid any ambiguity in indexing....
Google Apr 22, 2021
★★★ Why Does Google Ignore CSS-Displayed Images for Indexing Purposes?
John Mueller reminded us on Twitter that Google only indexes an image if it is displayed using an <img> tag. Images displayed via CSS (particularly background images) are not taken into account, nor a...
John Mueller Apr 19, 2021
★★ Are breadcrumbs really beneficial for SEO, or are they just a UI gimmick?
Breadcrumbs have two SEO functions: helping crawl via internal linking (but not necessary if the site is already well-linked), and displaying structured navigation in search results through breadcrumb...
John Mueller Apr 16, 2021
★★ Should you really include your m-dot pages in your hreflang annotations?
For sites with separate mobile versions (m-dot), while it's not mandatory to list them in the sitemap, it is recommended to include them if you want to apply hreflang annotations to mobile pages. The ...
John Mueller Apr 16, 2021
★★ Can you really combine noindex and canonical without SEO risks?
Theoretically, using noindex and canonical together is contradictory because it states that the pages are equivalent but must be treated differently. In practice, this causes no issues. If internal in...
John Mueller Apr 16, 2021
★★ Should you create a robots.txt blocked intermediary site to manage thousands of redirects?
To manage thousands of redirected domains (e.g., domain marketplace), create an intermediary site where all domains redirect, block this site with robots.txt, and then redirect to the main site. This ...
John Mueller Apr 16, 2021
★★★ Is crawl budget really something to worry about for your website?
Crawl budget only becomes a real concern for sites with hundreds of thousands or millions of pages. For sites with a few thousand or tens of thousands of pages, Google can crawl everything, even in a ...
John Mueller Apr 16, 2021
🔔

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.