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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★★★ How Can You Tell If Your Site Has Moved to Google's Mobile First Index?
Regarding the Mobile First project, John Mueller indicated in a hangout that one way to know if a site has moved to the Mobile First index is to look at server logs and check Google's activity: if 80%...
John Mueller Dec 18, 2017
★★★ How can you smartly manage perishable content without cluttering Google’s index?
Noindex tags can be used on perishable content pages to remove them from the index. Consider using the unavailable_after tag to automate this process....
John Mueller Dec 15, 2017
★★★ Does noindex truly kill the PageRank passed by your internal links?
Applying a noindex tag to a page tells Google not to index that page. If a page remains 'noindex' for too long, the links will also be ignored....
John Mueller Dec 15, 2017
★★★ Do you really need to make your site accessible from the U.S. to get indexed by Google?
Googlebot mainly crawls from the United States, so if U.S. users cannot access your site, the content will not be indexed by Google....
John Mueller Dec 15, 2017
★★★ Is it true that mobile-first indexing can decrease your traffic?
When Google transitions to mobile-first indexing, it generally does not result in any change in traffic from the user. Mobile URLs are shown to mobile users, while desktop URLs are displayed to deskto...
John Mueller Dec 15, 2017
★★★ Do sitemaps really ensure that your pages get indexed?
A sitemap helps to structure URLs and assists Google in better understanding your site. However, it does not guarantee that all URLs will be indexed....
John Mueller Dec 15, 2017
★★★ Is it really necessary to update your job offer sitemap regularly to rank higher?
After marking up your job offers, submit a sitemap and ensure you update it regularly to reflect available job offers, depending on how often they change....
Google Dec 14, 2017
★★★ Are hidden links in mobile-first truly considered by Google?
With mobile-first indexing, it's essential that links in the mobile version of the HTML code are clearly visible when the page loads, even if they are hidden from the user by default....
John Mueller Dec 14, 2017
★★★ Does schema markup for jobs really guarantee your ranking in search results?
We determine how different jobs from various platforms are displayed based on their relevance. Those with correct markup and indexed are not guaranteed to appear in the top position....
Google Dec 14, 2017
★★★ Why don't your technically perfect pages appear on Google?
Make sure that the pages you want to see in search results are indexable. Meta noindex tags or other issues can prevent indexing....
Google Dec 14, 2017
★★★ Why does it take months to lift an algorithmic penalty?
Algorithmic adjustments require re-indexing and a re-crawl of pages, which can take several months for modifications to be reflected in search results....
John Mueller Dec 14, 2017
★★★ Why can 503 errors ruin your crawl budget?
The ability of your server to handle Googlebot requests is important. If your server returns HTTP 503 Temporarily Unavailable codes, Googlebot will reduce its crawl frequency....
Google Dec 14, 2017
★★★ Can we really use noindex in the robots.txt file?
Google does not officially support a 'noindex' in the robots.txt file. It is recommended to use the 'noindex' tag on the pages themselves....
John Mueller Dec 14, 2017
★★ Is it really necessary to hide content from Googlebot to optimize geolocation experience?
Displaying content specific to a user's location can enhance user experience, but Googlebot must always have access to general content so that Google understands that the site is relevant on a global ...
John Mueller Dec 12, 2017
★★★ Does using noindex really strip away the PageRank passed through your internal links?
Applying a noindex tag to a page ultimately removes that page from Google's index, as well as all the links from that page in the link graph. Using nofollow or follow has no significant impact once th...
John Mueller Dec 12, 2017
★★★ Why does Google de-index pages after an HTTPS migration?
After migrating from HTTP to HTTPS, it is common to see an adjustment in the number of indexed pages. This phenomenon is generally due to Google's recognition that some pages are duplicates and their ...
John Mueller Dec 12, 2017
★★★ Should you really optimize your sitemaps to influence Google's crawling?
A sitemap file helps Google identify new or modified URLs without replacing normal crawling. Google will consult the sitemap to direct its crawling efforts based on the modification dates....
John Mueller Dec 12, 2017
★★★ Should you really block navigation facets in robots.txt?
For sites with faceted navigation, it is sometimes appropriate to block these pages via robots.txt, but it depends on the site. Using rel=canonical or the parameter management tool in Search Console c...
John Mueller Dec 12, 2017
★★★ Does Googlebot really index all JavaScript content without user interaction?
Googlebot can index content rendered by JavaScript if it does not require user interaction. If interaction is necessary to load the content, Googlebot generally cannot index it....
John Mueller Dec 12, 2017
★★★ Should you show ad blocker banners to Googlebot?
Googlebot must see what an average user sees on your site. Therefore, if a user with an ad blocker sees a banner, it must also be visible to Googlebot....
John Mueller Dec 12, 2017
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