What does Google say about SEO? /
Web performance has become an official ranking factor in Google's algorithm, particularly since the introduction of Core Web Vitals in 2020. This category compiles all official Google statements regarding loading speed optimization, performance metrics, and their impact on organic search rankings. SEO professionals will find Google's positions on key indicators such as Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), First Input Delay (FID), and Interaction to Next Paint (INP). Google regularly communicates about the importance of loading times, Time to First Byte (TTFB), cache optimization, and techniques like lazy loading. These official declarations help understand how Google truly measures user experience, which performance thresholds to prioritize, and how PageSpeed Insights integrates into a site's overall evaluation. For search practitioners, following Google's official recommendations on web performance is crucial to maintain or improve search rankings while delivering an optimal user experience that enhances conversion rates and visitor retention. Understanding Google's evolving stance on speed metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
Quick SEO Quiz

Test your SEO knowledge in 5 questions

Less than a minute. Find out how much you really know about Google search.

🕒 ~1 min 🎯 5 questions
★★★ Core Web Vitals: Why do your laboratory tests fail to impact your ranking?
Google uses field data from the Chrome User Experience Report for ranking, not laboratory data. Testing tools (extension, PageSpeed Insights in lab mode) are useful for testing and seeing the immediat...
John Mueller Jun 12, 2020
★★★ Should you really hide user comments from Google?
User comments visible in the rendered HTML do not need to be hidden from Google. Google is capable of identifying user-generated content, and it neither benefits nor harms SEO. Trying to hide them may...
Martin Splitt Jun 11, 2020
★★★ Should you really limit the number of HTTP resources per page for SEO?
Google does not impose a strict limit on the number of HTTP resources per page. Fewer resources are generally better to reduce the risks of loading failures, but you must be reasonable: putting everyt...
Martin Splitt Jun 11, 2020
★★★ Are Core Web Vitals Really Going to Transform Your SEO Strategy?
Google has announced new ranking signals related to user experience (Core Web Vitals), but they won't launch until the end of 2020. Webmasters must first focus on their current priorities, particularl...
Anonyme (金谷武明) Jun 04, 2020
★★★ Are mobile and desktop accordions really neutral for SEO?
Google recognizes and correctly indexes hidden content in accordions, whether on mobile or desktop. With Mobile-First Indexing, hidden content on desktop has no impact on indexing because Google mainl...
Anonyme (金谷武明) Jun 04, 2020
★★★ Why doesn't Google canonicalize URLs with fragments in sitelinks and rich results?
Google normally canonicalizes URLs with fragments (#) in standard search results, but not in sitelinks or rich results (like FAQs). In these cases, the URL with the fragment is recorded as it is in th...
Anonyme (金谷武明) Jun 04, 2020
★★★ Does temporary removal in Search Console really block PageRank?
Temporary removal in Search Console only hides the page from search results, without altering its indexing. Google continues to crawl, index, and pass PageRank through the links on this page. The remo...
John Mueller May 29, 2020
★★ Should you really split your JavaScript bundles by site section for better SEO?
Rather than using a single massive JavaScript bundle, it's advised to split the bundles according to the logical sections of the site (blog, forum, shop) to avoid downloading unnecessary code and to i...
Martin Splitt May 27, 2020
★★★ Can Google really ignore part of your site without warning?
Google does not guarantee that it will crawl and index all pages of a site, nor the speed at which this will happen. Indexing does not mean that the page will be visible or useful in the results. Focu...
Martin Splitt May 27, 2020
★★★ Does Google really ignore Cache-Control headers for crawling?
Google generally ignores Cache-Control headers because many resources are under-cached. To force re-downloads, it's better to use versioned URLs with hash (e.g., app.abc123.js) rather than relying on ...
Martin Splitt May 27, 2020
★★★ Should you stop using Google Cache to diagnose your indexing problems?
Google Cache is a fallback feature when a site is offline, created long ago and not actively maintained. It sometimes displays the original HTML, sometimes the rendering, and sometimes an old version....
Martin Splitt May 27, 2020
★★★ Are Core Web Vitals really a full-fledged ranking factor?
Google has launched Core Web Vitals, a set of performance metrics including LCP (Largest Contentful Paint), FID (First Input Delay), and CLS (Cumulative Layout Shift), which will be incorporated into ...
John Mueller May 26, 2020
★★ Should You Serve Lightweight Pages to Bots to Enhance Performance?
It is not recommended to serve bots pages without webfonts to gain performance. The added complexity (bot detection, extra code, potential bugs) far exceeds the minimal benefit. It is better to block ...
Martin Splitt May 18, 2020
★★ Does Google really treat 301 and 302 redirects differently for SEO?
Google does not make a significant distinction between 301 and 302 redirect codes in terms of SEO handling, although their behavior differs for browsers (cached vs non-cached)....
Martin Splitt May 18, 2020
★★★ Should you always enable loading='lazy' on all your images to boost SEO?
The HTML attribute loading='lazy' for images is strongly recommended for SEO. Img tags remain in the HTML, so Google can crawl and index images normally while speeding up page load for users. It’s a s...
John Mueller May 15, 2020
★★ Does Google really give a 6-month notice before any major SEO changes?
Google Search strives to give at least 6 months' notice before any major algorithmic change requiring webmaster action (e.g., HTTPS, AMP, Page Speed). For Chrome initiatives (slowness warnings), the t...
John Mueller May 14, 2020
★★ Does hreflang in HTML really weigh down your pages, or is that just a myth?
Hreflang markup in the HTML head is static text that compresses very well. For an e-commerce site with a lot of content, adding hreflang annotations to the HTML does not significantly affect the page ...
John Mueller May 13, 2020
★★★ Does the URL removal tool truly deindex your pages?
The URL removal tool in Search Console hides URLs from search results but does not immediately remove them from the index. They continue to be counted in the Index Coverage report until Google fully r...
John Mueller May 13, 2020
★★★ Does JavaScript rendering really consume crawl budget?
There is no specific quota or budget for JavaScript rendering or JS execution (no 'render budget' or 'JavaScript budget'). The crawl budget only pertains to HTTP requests (crawling), not rendering. Th...
Martin Splitt May 12, 2020
★★★ Do Google's Web Vitals really model user experience?
Google has announced Web Vitals, consisting of three existing metrics considered the best way to approximate user experience in terms of speed: Largest Contentful Paint (LCP), Cumulative Layout Shift ...
Martin Splitt May 12, 2020
🔔

Get real-time analysis of the latest Google SEO declarations

Be the first to know every time a new official Google statement drops — with full expert analysis.

No spam. Unsubscribe in one click.