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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
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★★★ Is it true that the text/HTML ratio is completely irrelevant for Google SEO?
Google does not use the concept of text/HTML ratio as an SEO ranking factor. Many tools calculate this metric, but it does not affect SEO. Only two extreme cases can pose a problem: reduced page speed...
John Mueller Feb 05, 2021
★★★ Does PageSpeed Insights really reflect what Google sees on your site?
PageSpeed Insights is based on Chrome, not on Googlebot. Googlebot also uses Chrome for rendering but must follow robots.txt for embedded resources (CSS, JS). PageSpeed Insights is not subject to robo...
John Mueller Feb 05, 2021
★★★ Do You Really Need to Pass All 3 Core Web Vitals to Get an SEO Boost?
John Mueller also explained in a webmaster hangout that, as part of the rollout of the "Page Experience / Core Web Vitals" project next May, all 3 KPIs (FID, CLS, LCP) will need to be met with positiv...
John Mueller Feb 01, 2021
★★ Do cookie banners really affect your Core Web Vitals score?
Google does not differentiate between GDPR-compliant cookie banners and other page elements for speed calculation. Even if legally required, a CMP banner that slows down loading or causes layout shift...
John Mueller Jan 29, 2021
★★★ Can speed really hurt your SEO with Core Web Vitals?
Speed is currently used as a ranking signal for mobile. In May 2021, with the rollout of Core Web Vitals, this signal is likely to be reinforced. However, content relevance remains paramount: a highly...
John Mueller Jan 29, 2021
★★★ Do Core Web Vitals really need to be ALL in the green to boost your ranking?
To qualify for the Core Web Vitals ranking bonus starting May 2021, the metrics must be in the green zone. If any metric is yellow or red, it will not count as compliant. All criteria must be met to b...
John Mueller Jan 29, 2021
★★ Do Core Web Vitals really change after the initial page load?
LCP values are updated as content loads. CLS values can be updated based on user actions. These metrics are not fixed at the time of the initial load....
Google Jan 28, 2021
★★★ Can your slow pages drag down the rankings of your entire site?
Core Web Vitals are evaluated at the level of each page. However, pages with poor scores can have a negative impact on the entire site. This is not an isolated assessment without consequences....
Google Jan 28, 2021
★★★ Do Core Web Vitals really measure continuously throughout the user session?
LCP, FID, and CLS metrics are updated in real-time as users navigate and interact with the page, not just at the initial load. CLS updates occur with user actions....
Google Jan 28, 2021
★★ Does LCP truly measure the speed perceived by the user?
Largest Contentful Paint (LCP) measures how quickly the user can see the most useful content on a page. It represents the moment when the main content is loaded in the page loading timeline....
Google Jan 28, 2021
★★★ How does Google now assign AMP cache's CrUX data to the origin?
CrUX data from the AMP cache is now attributed to the origin. If canonicalization is correctly set up between AMP and non-AMP, data from both versions is taken into account....
Google Jan 28, 2021
★★★ Can you really block the collection of Core Web Vitals using robots.txt or noindex?
Core Web Vitals data comes from the Chrome User Experience Report (CrUX) based on real users. Blocking Google via robots.txt or noindex does not prevent the collection of this data, as it is measured ...
Google Jan 28, 2021
★★★ Why does CrUX collect your Core Web Vitals even if you block Googlebot?
The Core Web Vitals use data from the Chrome User Experience Report (CrUX), based on real user experiences. The data accumulates even if Googlebot is blocked by robots.txt or noindex, as it originates...
Google Jan 28, 2021
★★★ How does Google estimate your Core Web Vitals when CrUX data is lacking?
When CrUX data is insufficient for a page, Google may use scores from similar pages on the same site to estimate the score. If the site structure is complex, the overall site score may be applied....
Google Jan 28, 2021
★★★ Do Core Web Vitals really affect your entire site or just your slow pages?
Core Web Vitals are assessed at the level of each individual page. However, pages with poor scores can negatively impact the overall evaluation of the site....
Google Jan 28, 2021
★★ Can Google's cache really skew the rendering of your JavaScript pages?
During rendering, Google extensively uses cache to ensure consistent outputs. Cacheable GET requests will be cached. If a cached resource has expired or is non-cacheable, Google will retrieve it again...
Martin Splitt Jan 27, 2021
★★ Can you really rely on Google's cache to check JavaScript indexing?
The cached version displayed in search results is an outdated feature that does not follow the same pipeline as modern indexing. It does not include the content rendered by JavaScript. Do not rely on ...
Martin Splitt Jan 27, 2021
★★ Why do live tests in Search Console produce conflicting results?
Live tests in the URL Inspection tool or the mobile test can show different results from test to test because they do not utilize the cache like the actual indexing pipeline. Timeouts can occur, leadi...
Martin Splitt Jan 27, 2021
★★★ Does Googlebot crawl and render JavaScript at the same frequency?
Googlebot crawls and renders JavaScript at the same frequency. The process follows this sequence: crawling the HTML, then rendering, and finally indexing. In some cases, Google may render more often t...
Martin Splitt Jan 27, 2021
★★★ Will Core Web Vitals really revolutionize your SEO?
Google plans to use Core Web Vitals as a ranking factor starting in May 2021. It is recommended to focus on the three main metrics....
John Mueller Jan 22, 2021
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