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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★★★ Does mobile-first indexing really mean your site has to be mobile-friendly?
Mobile-First Indexing means that Google uses the mobile crawler to index and rank sites, but this does not mean that a site must be mobile-friendly. These are two different aspects of SEO....
Google Nov 05, 2020
★★ Does the type of Googlebot used really influence the indexing of your pages?
Whether a site is crawled by the desktop or mobile Googlebot does not affect its ability to be indexed and displayed in search results. The type of crawler used is not a determining factor for indexin...
Google Nov 05, 2020
★★★ Can a desktop-only site thrive under Mobile-First Indexing without a mobile version?
After the transition to Mobile-First Indexing, sites with only a desktop version continue to be indexed normally if the mobile crawler can explore them. They do not disappear from search results....
Google Nov 05, 2020
★★ Should you really bundle your JavaScript files to preserve your crawl budget?
For JavaScript resources, use a single bundle instead of loading multiple JavaScript files to avoid wasting crawl budget. Pre-render resources if possible; otherwise, JavaScript resources remain accep...
Martin Splitt Oct 30, 2020
★★★ Can lazy loading block Google from indexing your content?
If a site requires scrolling to a certain position for content to load automatically, Google will not see that content. Google loads the page once and sees what is displayed without performing any spe...
John Mueller Oct 30, 2020
★★ Should we really consider Googlebot as a user with accessibility needs?
To explain SEO to developers, think of Googlebot as a user with assistive technology needs: it can’t really see, doesn’t necessarily understand text at first glance, and requires semantically rich dat...
Martin Splitt Oct 30, 2020
★★★ Is server-side rendering truly the magic solution for JavaScript SEO?
Google recommends server-side rendering as a robust approach, but it is absolutely necessary to test with tools like Search Console, the mobile optimization test, or the rich results test to ensure th...
Martin Splitt Oct 30, 2020
★★★ Should you really block the indexing of all your e-commerce facets?
For e-commerce facets and filters, the general recommendation is not to allow them to be indexed at all, unless these facet pages can truly stand alone as important category pages for the brand. Paged...
John Mueller Oct 30, 2020
★★ Should you really use server-side rendering for your metadata?
To prevent Google from sometimes fetching content without JavaScript rendering, server-side rendering of metadata is a solution. Otherwise, there's no need to worry too much as rendering and index upd...
Martin Splitt Oct 30, 2020
★★★ Does Google really index HTTPS even with an invalid SSL certificate?
Google will switch to the HTTPS version as canonical even if the certificate is no longer valid, if critical elements are missing, or if mixed content generates warnings in the browser. All other sign...
John Mueller Oct 30, 2020
★★★ Is it true that passages serve as a separate index in Google?
Passages are not a core update. Instead, they are about better ranking extracts from existing pages, recognizing that a large page can contain a particularly relevant part for a query. There is no sep...
John Mueller Oct 30, 2020
★★★ Do 302 redirects really pass on as much PageRank as 301 redirects?
Google uses numerous signals to determine the canonical URL: 301/302 redirects, rel canonical, internal/external links, sitemap, appearance of the URL. A long-term 302 can be treated as a 301 if it st...
John Mueller Oct 29, 2020
★★ Can paged pages really disappear from Google search results?
There is no meta tag to tell Google to index paged pages but not show them in the results. If they are indexed, they may theoretically appear. In practice, page 1 usually appears first as it is strong...
John Mueller Oct 29, 2020
★★★ Should you really archive out-of-stock products instead of leaving them marked as unavailable?
For permanently out-of-stock unique products, it is preferable to move them to an 'archives' or 'reference' section rather than keep product pages marked as 'out of stock'. This allows images to remai...
John Mueller Oct 29, 2020
★★★ Does lazy loading really harm your content's indexing by Google?
When rendering a page, Google uses a fairly high viewport and indexes everything that loads within this viewport. If content requires a specific action (scroll, click on 'Read more'), it will probably...
John Mueller Oct 29, 2020
★★★ Should you return a 404 or a 200 on a product page that's out of stock?
For temporarily unavailable products, displaying a page with a 200 code and an email alert option is acceptable. If the unavailability is long, switching to a 404 allows Google to optimize the crawl b...
John Mueller Oct 29, 2020
★★★ Should you really use cross-domain canonicals to consolidate multiple thematic sites?
Using canonical tags across multiple domains (e.g., 25 thematic stores pointing to a main store) is technically correct. It avoids duplicate content but may redistribute SEO strength among the domains...
John Mueller Oct 29, 2020
★★ Should you really differentiate between the visible date and the structured data date?
The visible date on the page should reflect substantial changes to the main content. For structured data (sitemaps, headers), you can include minor changes like new comments or sidebar adjustments, bu...
John Mueller Oct 29, 2020
★★★ Should you really block cookie banners for Googlebot?
Blocking cookie banners for Googlebot is not considered cloaking and will not result in a manual penalty. In most cases, these banners are implemented in JavaScript or HTML, and Google can index the m...
John Mueller Oct 29, 2020
★★ Should you hide GDPR consent banners from Googlebot to avoid cloaking?
Excluding Googlebot from consent banners via user-agent could be interpreted as cloaking. However, if the banner is only shown to European users and Googlebot crawls from the USA, it won’t see it anyw...
John Mueller Oct 29, 2020
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