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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★★ Is it true that Google migrates sites to mobile-first indexing in massive waves?
The MFI migration occurs in batches of several million sites at a time, not site by site. If your site hasn't been migrated yet while being technically ready, that's normal. Just wait for your turn; n...
Google Sep 30, 2021
★★ Why does Google keep crawling old URLs even after a redirect?
Even after 1 year of redirection and complete transfer of signals, Googlebot continues to request the old URL. This is normal: Google periodically checks for new content or whether the redirect is sti...
Google Sep 30, 2021
★★★ What makes your site truly stand out in search results?
When it comes to indexing and ranking, don't just aim to match competitors in quality. Ask yourself: why would a user choose YOUR site over others? Without clear differentiation and a unique purpose, ...
Google Sep 30, 2021
★★ Does hidden CSS content on mobile really impact your SEO?
In Mobile-First Indexing, hidden CSS content (display:none) on mobile is indexed and evaluated. For structured data like hidden breadcrumbs on mobile, this isn’t technically a violation, although foll...
Google Sep 30, 2021
★★★ Does it really take a year for PageRank to fully transfer after a 301 redirect?
After about one year of a 301 redirect, the transfer of signals (PageRank) to the new URL is complete. You can then remove the redirect. This duration is indicative (it could be faster), but one year ...
Google Sep 30, 2021
★★★ What are the reasons your content isn’t being properly indexed by Google?
The majority of reported non-indexing cases are due to: 1) Google not considering the content important/enough priority, 2) Temporary crawl errors, 3) Manual actions (like active removal requests). Ra...
Google Sep 30, 2021
★★ How can you effectively index content in JavaScript popups?
For content displayed via JavaScript popups without a dedicated URL, indexing is difficult. Google recommends that each page be accessible through a link with a unique URL (according to general guidel...
Google Sep 30, 2021
★★★ How does Google handle dynamic content associated with hash URLs for indexing?
Google does not index content that loads solely through hash changes in the URL. However, if all the content is already present in the HTML and the hash merely shows/hides sections like tabs or accord...
Martin Splitt Sep 29, 2021
★★★ Are Invisible Noindex Tags Affecting Your A/B Testing Results?
When Google detects a noindex tag that developers can't find in the code, it's often due to A/B testing frameworks that inject the noindex tag into certain variations or a percentage of requests. CDNs...
Martin Splitt Sep 29, 2021
★★★ How do blocked API requests impact your SEO?
When content does not appear in Googlebot's rendering but works on the client side, it's essential to check if the API calls required for loading the content are blocked in robots.txt, too slow, or bl...
Martin Splitt Sep 29, 2021
★★ Is it true that not all your pages are indexed by Google?
If Google does not index 100% of a site's pages, it is not necessarily related to the server's response time. It could be due to a lack of interest from Google in certain pages, quality issues, or con...
Martin Splitt Sep 29, 2021
★★ Why does Google ignore certain resources during a crawl?
If Search Console indicates that certain JavaScript, CSS, or image resources are not loading during the crawl, this is generally not an issue. Google caches these resources and may skip downloading th...
Martin Splitt Sep 29, 2021
★★ Does a layout error during prerendering really affect your site's SEO indexing?
If you are using Prerender and Google's cache has an incorrect layout due to an error, it does not impact indexing as long as it is only the layout that is affected. Google's cache does not always wor...
Martin Splitt Sep 29, 2021
★★ Why is targeting a TTFB under one second critical for SEO?
Google does not set a strict recommendation for TTFB, but aiming for less than one second, or around one second maximum, is a good general goal for user experience. This is not specific to Google's cr...
Martin Splitt Sep 29, 2021
★★★ Is it necessary to have an identical design for dynamic rendering to please Googlebot?
For dynamic rendering or SSR intended for Googlebot, the content does not need to be exactly the same as the front-end. JavaScript elements for interactions may vary, but it is easier to maintain a si...
Martin Splitt Sep 29, 2021
★★★ How does the canonical tag really impact your SEO?
Adding a link rel="canonical" element helps to confirm your preferred URL and encourages search engines to focus on this specific version....
John Mueller Sep 28, 2021
★★★ Should you worry about URL variations when it comes to crawling?
When a website displays the same content across different URL variations, search engines will attempt to crawl all the variations they find. This can slow down the discovery of other useful content on...
John Mueller Sep 28, 2021
★★★ Why does the robots.txt file require exact URLs?
The robots.txt file uses exact URLs. If you have entries that refer to a specific version of a URL, they will not apply to other versions of that URL....
John Mueller Sep 28, 2021
★★★ How does duplicate URL canonicalization affect your SEO?
When search engines encounter multiple distinct URLs showing the same content, they must decide which one to keep. This process is called canonicalization. It doesn't change rankings, but systems may ...
John Mueller Sep 28, 2021
★★★ Do Mobile Interstitials Actually Block Your Pages from Being Indexed?
John Mueller explained on Twitter that mobile interstitials (which Google has condemned since 2017) generally don't cause indexing issues, but can instead trigger ranking position losses in the search...
John Mueller Sep 27, 2021
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