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.
★★ Why does Googlebot's server load impact vary so dramatically based on your technical architecture?
The load that crawling places on a server depends heavily on how the site is built. Expensive operations such as complex database queries generate significantly more load than a simple HTML site....
Gary Illyes May 29, 2025
★★★ Does Google's crawling really consume the most server resources?
Contrary to popular belief, it's not crawling that consumes the most resources at Google, but indexation and processing of the data retrieved that are truly resource-intensive....
Gary Illyes May 29, 2025
★★ Why has Google multiplied its crawlers since the arrival of Mediapartners-Google?
In 2006, Google AdSense introduced its own distinct user agent separate from Googlebot. From this period onwards, Google began to have increasingly more separate crawlers with their own identifiers....
Gary Illyes May 29, 2025
★★★ Has Google really been respecting robots.txt since day one?
Since Google's very beginning, robots.txt has been supported. Regardless of the crawling technology used, Google has always allowed site owners to opt-out of crawling via the robots exclusion protocol...
Gary Illyes May 29, 2025
★★★ Does Google really slow down its crawl to protect your servers?
Google has a system that monitors server health and automatically slows down the crawl if the server becomes overloaded. The goal is to adjust the crawl rate so as not to harm sites....
Gary Illyes May 29, 2025
★★★ Should you really worry about crawl budget before hitting 1 million pages?
For an individual website, a threshold of around 1 million pages is the point where site owners should start concerning themselves with crawl budget. Below that, it's generally not a problem....
Gary Illyes May 29, 2025
★★ Does Googlebot really support HTTP/3 for crawling your website?
Googlebot currently supports HTTP/2 for more efficient crawling using streamed connections. HTTP/3 is not yet supported but could be in the future....
Gary Illyes May 29, 2025
★★ Is Google Really Crawling Less of the Web, and Should You Worry About It?
Last year, Google actively worked to reduce its footprint on the internet by optimizing its crawling requests to save resources....
Gary Illyes May 29, 2025
★★ Does Google really ignore robots.txt when users take action?
When an action is initiated directly by a user (such as manually submitting a URL for inspection), it may be appropriate to ignore robots.txt because it's not truly a robot but a specific user action....
Gary Illyes May 29, 2025
★★ Does Google's Live Test Tool Actually Crawl Your Site in Real Time?
The Live Test tool in Search Console uses a high-priority real crawler, while property verification of the site is user-triggered and works almost instantly without any crawl delay....
Gary Illyes May 29, 2025
★★★ Why Doesn't Google Search Console Show Any Traffic for Certain Versions of Your Domain?
On Reddit, John Mueller explained to a user that they wouldn't be able to see a drop in traffic on Google Search Console for certain versions of their domain (without "http", without "www") since thes...
John Mueller May 27, 2025
★★ Is Technical SEO Still Essential in the Age of Artificial Intelligence?
After distinguishing between "programmatic SEO" and "technical SEO," John Mueller explained that technical SEO (namely making sites crawlable, indexable, and understandable) will continue to make sens...
John Mueller May 27, 2025
★★★ Do Hreflang Tags Really Guarantee Indexing of All Your International Pages?
On Bluesky, John Mueller reminded us that using hreflang tags guarantees neither the indexing nor the ranking of pages in Google search. He clarifies that some hreflang variants may not be indexed, es...
John Mueller May 20, 2025
★★ Why Does Using Multiple URLs for the Same Image Hurt Your SEO?
Google recently clarified its SEO recommendations for images: it is advised against using multiple different URLs or file names for the same image on a website, even if it is embedded on multiple page...
Google May 20, 2025
★★ Are HTTP 1xx status codes harming your site's crawlability by Googlebot?
Google does not support HTTP 1xx status codes (such as 100 Continue or 101 Switching Protocols). The crawler simply passes through them without noticing and waits for the next non-1xx status code to e...
Gary Illyes May 15, 2025
★★★ Are your TCP/UDP network errors really blocking Google's crawl?
Connection issues reported in Search Console (network blocking messages or connection problems) can originate from low-level TCP, UDP, QUIC, or DNS layers. These network errors directly impact Google'...
Gary Illyes May 15, 2025
★★★ Should you still worry about choosing between 301 and 302 redirects?
For Google Search, all 3xx redirect codes (301, 302, 307, 308) are treated similarly during crawling. Google slightly takes into account the temporary/permanent distinction for canonicalization, but o...
Gary Illyes May 15, 2025
★★ Is Google really serious about hands-on learning with its new Deep Dive workshops?
The Deep Dive events will include practical workshops on Search Console, Google Trends, and technical subjects like robots.txt, allowing participants to learn through hands-on practice rather than sim...
Cherry May 01, 2025
★★★ Is Image Streaming Killing Your Google Image Search Rankings?
John Mueller stated that using "image streaming" techniques, similar to YouTube video embedding, was not favorable for SEO. He even went so far as to say it was an "excellent way to prevent your image...
John Mueller Apr 29, 2025
★★★ Should You Really Set Today's Date in Your XML Sitemap's Lastmod Tag?
On Reddit, John Mueller stated that having the sitemap's lastmod tag always display the current date is lazy and proves counterproductive when it's intentional. Otherwise, it may also be a sitemap gen...
John Mueller Apr 29, 2025
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