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 submitting a sitemap really guarantee your pages will be indexed?
You can submit a sitemap to Google to indicate the pages present on your site, but this does not guarantee their indexing. The sitemap is simply a way to show Google which pages you want to bring atte...
Google Apr 20, 2011
★★★ Is it true that you should submit your backlinks to Google, or is it just a waste of time?
Google discovers backlinks as it explores the web. There is no need, and it is not even useful, to manually submit a list of links to your site, as automatically discovered links generally have higher...
Google Apr 20, 2011
★★★ Can HTML coding errors really block indexing by Google?
Coding errors in HTML can prevent a page from being indexed by Google. For example, extremely long pages or those containing text in a too random and disorganized manner may not be fully indexed....
Google Apr 20, 2011
★★★ Should you really use rel=canonical tags across domains or prefer 301 redirects?
Google accepts rel="canonical" tags between different domains. They essentially function like a 301 redirect. However, a 301 redirect is always preferred as all search engines know how to handle it. W...
Google Apr 20, 2011
★★★ Is the hashbang (#!) still a viable solution for indexing AJAX content?
There is an indexing standard for AJAX that uses the exclamation mark with the hash symbol ('#!') which allows Google to know that the content should be indexed. Twitter and Facebook utilize this meth...
Google Apr 12, 2011
★★★ Do 301 redirects and rel=canonical tags really transmit the same PageRank?
There is no significant difference in the amount of PageRank transferred between 301 redirects and rel=canonical....
Google Apr 12, 2011
★★★ How does Google really interpret the JavaScript on your site?
Google is working on improving its capability to understand and index JavaScript, AJAX, and other rich content. Their understanding is better with standard JavaScript libraries, rather than complex cu...
Google Apr 12, 2011
★★★ Should you really prioritize 301 redirects over rel=canonical?
It is generally recommended to use 301 redirects if possible, as they are more widely supported and recognized by search engines, and they also transport the user in their browser....
Google Apr 12, 2011
★★★ Can Twitter and PubSubHubbub really speed up the indexing of your original content?
To help get original content recognized, you can tweet about it so that people see and link to the content, and use a service like PubSubHubbub to signal new posts. Google may sometimes use these sign...
Google Apr 05, 2011
★★★ How does Google's indexing architecture truly impact SEO?
Google documents its technologies and architecture, particularly through academic articles and technical publications. Information about the functioning of data centers and innovations can be found by...
Google Mar 18, 2011
★★★ How long should you really keep your 301 redirects after a domain migration?
Google recommends maintaining 301 redirects for several weeks or a few months when changing domains, to allow Googlebot to recognize that the site has fully migrated. It is crucial to ensure that each...
Google Mar 17, 2011
★★★ Should you really ditch robots.txt to manage geographic targeting and URL parameters?
Complex elements such as geographic targeting or query parameters are often better managed in dedicated tools like Google Webmaster Tools rather than in a robots.txt file....
Google Mar 17, 2011
★★★ Does Googlebot really only crawl from the United States?
Currently, Googlebot performs its crawls solely from IP addresses located in the United States. This means that when Googlebot visits your site, it must be treated like a standard American visitor in ...
Google Feb 28, 2011
★★★ Is IP geolocation truly free from the risk of cloaking for Google?
Using the user's IP address to adapt the page content to the local language is not considered cloaking by Google, as long as Googlebot receives the same content as a normal user. This means that IP-ba...
Google Feb 28, 2011
★★★ Should we still limit the number of links per page?
Google has removed the technical guideline that recommended limiting the number of links to 100 per page, as it was based on an old technical constraint related to the 101 kilobyte indexing limit per ...
Google Feb 23, 2011
★★★ Can SafeSearch now include pages blocked by robots.txt?
Previously, if Google could not crawl a page blocked by robots.txt, it was excluded from SafeSearch. Now, if Google believes an uncrawled page is likely safe, it will be included in SafeSearch search ...
Matt Cutts Feb 16, 2011
★★★ Should you really use 'noindex, follow' on your HTML sitemaps?
Google recommends using the 'noindex, follow' robots meta tag for pages like HTML sitemaps that you do not want to appear in search results, but for which you want the links to be followed and counted...
Google Feb 15, 2011
★★★ Can site fixes really reverse an algorithmic penalty?
When a site is impacted by an algorithm, making changes to address identified issues can potentially restore its ranking after recrawling and processing by Google's algorithms....
Google Feb 14, 2011
★★★ Do crawl errors really block the accumulation of PageRank on your site?
Fixing crawl errors, such as 404 pages, allows you to capitalize on potential traffic from other sites and accumulate PageRank from external links to the correct URLs....
Google Jan 25, 2011
★★★ Does rel=canonical really solve all your duplicate content issues?
To manage duplicate content issues, Google recommends using the rel=canonical attribute as well as managing URL parameters through webmaster tools....
Google Jan 25, 2011
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