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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
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★★ Why do your PageSpeed testing tools show contradictory LCP and FCP scores?
FCP and LCP do not necessarily happen simultaneously, especially on devices with slow CPUs or slow network connections. Lighthouse run locally can yield different results than PageSpeed Insights execu...
Martin Splitt Jul 01, 2020
★★★ Can ads drag down your Google ranking because of speed issues?
Google assesses the speed of a page as it is served to end-users, including ads. If ads slow down the page, this affects the speed score. Speed is already a factor in mobile ranking. Future Core Web V...
John Mueller Jun 26, 2020
★★ How does Google really refresh the AMP cache of your pages?
Google regularly updates the AMP cache, particularly during user visits to pages. There is also an API that allows for forced updates of the AMP cache for specific articles. When a user accesses a pag...
John Mueller Jun 26, 2020
★★★ Do Search Console reports really reflect your indexing status?
Search Console aggregate reports (mobile-friendly, structured data, Core Web Vitals) only show a sample of the indexed pages, not the entirety. In extreme cases, this sample may be limited to a single...
John Mueller Jun 26, 2020
★★★ Is page speed really just a secondary ranking factor in Google?
Google refutes the claim that page speed is the most important ranking factor. While speed is a factor to consider, it is not the primary criterion for ranking....
Martin Splitt Jun 24, 2020
★★ Is it true that “creating the best possible site” has become Google’s worst SEO advice?
Google acknowledges that telling webmasters to “build the best possible site” is not sufficient. The SEO community needs concrete and actionable recommendations to prioritize optimizations (HTTPS, spe...
Martin Splitt Jun 24, 2020
★★ Do technical errors on a main domain really penalize its subdomains?
Technical errors (404s, structured data issues, speed problems, grammar) on a domain generally do not affect subdomains. Exception: if the main domain appears completely offline, Google can deduce tha...
John Mueller Jun 23, 2020
★★★ Should you unblock JavaScript and CSS in robots.txt for better SEO?
Blocking access to JavaScript and CSS files via robots.txt prevents Google from downloading these resources, which can cause rendering issues. If content is generated by JavaScript or if non-native la...
Martin Splitt Jun 23, 2020
★★ Why aren't all your Disqus comments indexed in the same way?
The indexing of Disqus comments varies based on the implementation (caching in static HTML or not). Martin Splitt mentioned a possible bug. Indexing is not uniform across all sites using Disqus....
John Mueller Jun 23, 2020
★★★ Should you really prioritize every Search Console issue as a crisis?
The problems listed in Search Console do not all have the same level of criticality. An inability to index is critical, but speed issues are less urgent. It's necessary to evaluate the real impact on ...
John Mueller Jun 23, 2020
★★ Can you really have a good FID while suffering from catastrophic TTI?
It is possible to have a good First Input Delay score while having poor Time to Interactive and Total Blocking Time scores, likely due to intermittent blocking of the main thread not captured by FID. ...
Martin Splitt Jun 17, 2020
★★ Should you still be concerned about native lazy loading for SEO?
Googlebot Chromium supports native lazy loading of images (loading='lazy'), introduced in recent versions of Chrome....
Martin Splitt Jun 17, 2020
★★ Does JavaScript really drain your crawl budget?
JavaScript sites may consume slightly more crawl budget if the JS makes additional network requests, but Google caches common resources. The actual impact on crawl budget is generally negligible excep...
Martin Splitt Jun 17, 2020
★★ Is it really essential to split your JavaScript by page to optimize crawling?
It is possible and recommended to load scripts (like reCAPTCHA) only on the pages where they are necessary, using code splitting techniques to optimize performance....
Martin Splitt Jun 17, 2020
★★ Why doesn’t Google need to download your images to index them?
Images are often not downloaded by Search Console testing tools for performance reasons, but this does not affect indexing. For the main web crawl, Google only needs the image URL, alt text, and conte...
Martin Splitt Jun 17, 2020
★★★ Can poorly implemented lazy loading really make your images invisible to Google?
If lazy loading only shows placeholder URLs in the rendered HTML instead of the actual image URLs, it indicates incorrect implementation and Google will not see the real images. Check the rendered HTM...
Martin Splitt Jun 17, 2020
★★★ Is it true that Google's cache is a trap for testing your page's rendering?
Google's cache: function (cache URL) is not a reliable testing tool. If the rendering in the cache seems incorrect, it means nothing. Use the URL Inspection Tool in Search Console to test rendering, n...
Martin Splitt Jun 17, 2020
★★ Is it possible to have great Core Web Vitals while running a technically flawed site?
It is possible to have an excellent First Input Delay but poor Time to Interactive and Total Blocking Time, probably due to JavaScript blocks that do not affect the FID. If the actual user experience ...
Martin Splitt Jun 17, 2020
★★ Is it true that native lazy loading is crawled by Googlebot?
The headless Chromium-based Googlebot supports native lazy loading for images (loading='lazy' attribute)....
Martin Splitt Jun 17, 2020
★★ Does JavaScript really consume more crawl budget than classic HTML?
JavaScript sites may consume slightly more crawl budget if JS makes extra network requests, but Google caches common resources (JS, CSS, identical images) between pages. The real impact on crawl budge...
Martin Splitt Jun 17, 2020
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