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 the Intersection Observer is really crawled by Googlebot?
The Intersection Observer is a recommended approach for lazy loading with Googlebot. Google seems to trigger all intersection observers as long as they generate new content, within certain limits....
Martin Splitt Dec 10, 2020
★★★ Are all indexing signals really ranking signals?
Among the many signals extracted during indexing, some become ranking signals (SafeSearch, country, language) while others do not (like most of the hashes used for canonicalization)....
Gary Illyes Dec 10, 2020
★★★ How does Google choose the canonical URL among more than 20 signals?
Google uses over 20 different signals to determine which page should be selected as the canonical URL in a cluster of duplicates. These signals include content, PageRank, HTTPS, sitemaps, and redirect...
Gary Illyes Dec 10, 2020
★★★ Is PageRank still influencing the selection of canonical URLs?
PageRank is still used by Google as one of the signals to determine which page should become canonical among a group of duplicate pages, even after all these years....
Gary Illyes Dec 10, 2020
★★★ How does Googlebot really handle content at the bottom of the page?
Googlebot does not utilize scrolling but expands the viewport vertically. When new content is detected, the viewport grows larger, within certain limits related to memory constraints....
Martin Splitt Dec 10, 2020
★★★ Should you ditch infinite scroll to ensure proper indexing by Google?
For infinite scroll, it is recommended to split the content so that it is accessible via specific URLs, to submit individual elements via sitemap, or to offer a paginated version as an alternative....
Martin Splitt Dec 10, 2020
★★★ Do redirects really outweigh the HTTPS signal when it comes to choosing the canonical URL?
A redirect (301 or any other type) carries significantly more weight in the canonicalization process than whether a page is on HTTPS or HTTP, as the user will ultimately see the destination of the red...
Gary Illyes Dec 10, 2020
★★ Does Google really mean it when they say every URL counts toward your crawl budget?
Every crawled URL counts against the crawl budget: alternate language versions, CSS files, images. Even 170 language variations of a page all consume budget; they are not exempt....
Gary Illyes Dec 09, 2020
★★★ Should you really be concerned about your site's crawl budget?
The vast majority of websites do not need to worry about crawl budget. It concerns only a substantial but minority segment of the web ecosystem....
Gary Illyes Dec 09, 2020
★★★ Is there really a significant difference between pre-rendering, SSR, and dynamic rendering for SEO?
Pre-rendering creates static content from JavaScript when you know that the content changes (e.g., blog). Server-side rendering (SSR) executes JavaScript on the server for each request. Dynamic render...
Martin Splitt Dec 09, 2020
★★ Should you really be concerned about Googlebot's aggressive caching of your static resources?
Googlebot uses relatively aggressive caching. CSS files, images, and other resources that have already been crawled are cached and not requested again, thus not counting against the crawl budget....
Martin Splitt Dec 09, 2020
★★★ Does removing low-quality content really improve the crawl budget?
Removing or pruning less useful content from your site enables Googlebot to focus its time on higher quality pages that are actually beneficial to users....
Gary Illyes Dec 09, 2020
★★ Does Google really index all file formats beyond just HTML?
Google Search can index many formats beyond HTML: PDF, spreadsheets, Word files, and even Lotus files. These binary formats are converted to HTML for processing. Google notably uses a licensed Adobe d...
Gary Illyes Dec 09, 2020
★★★ Caffeine: How does Google turn crawling into indexing?
Caffeine is the external name for Google's indexing system. It ingests the protocol buffers produced by Googlebot, collects signals, normalizes HTML, converts formats, detects errors, and adds informa...
Gary Illyes Dec 09, 2020
★★★ Does Google really render your pages before indexing them almost every time?
In nearly 100% of cases, the process is: crawl, then render, then indexing. Except for multiple rendering failures or specific signals in the initial HTML, virtually all websites are rendered before t...
Martin Splitt Dec 09, 2020
★★ Is Google really limiting its crawl deliberately to spare your servers?
Google has enough crawling capacity to crash parts of the Internet, but deliberately chooses to crawl as slowly as possible while discovering enough content not to harm sites....
Gary Illyes Dec 09, 2020
★★ Should you sacrifice server speed to save on crawl budget?
If your servers can handle it, avoid sending 429 or 50x error codes and ensure that your server responds quickly. This positively influences Googlebot's crawl....
Gary Illyes Dec 09, 2020
★★★ Should you really worry about the crawl budget if it's under a million URLs?
If your site has fewer than a million URLs, you generally don't need to worry about crawl budget. This figure serves as a reference baseline....
Gary Illyes Dec 09, 2020
★★ Is SSR with hydration really the best of both worlds for SEO?
Server-side rendering with hydration allows for generating static content on the server for speed, then loading JavaScript in the browser for dynamic parts. This provides the benefits of both approach...
Martin Splitt Dec 09, 2020
★★★ Does the noindex truly prevent Google from processing a document?
Google places a particular emphasis on the meta name robots tag. If the noindex value is detected, Google stops processing the document and does not add it to the index....
Gary Illyes Dec 09, 2020
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