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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
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★★ Can WordPress Site Kit really enhance your organic SEO?
Site Kit is not designed as an SEO tool that guarantees better rankings. Its primary goal is to simplify access to Google tools (Analytics, Search Console, PageSpeed Insights, AdSense) directly from t...
Maria Feb 23, 2021
★★★ Why does Google display the canonical URL instead of the local URL in Search Console?
In Search Console, Google primarily reports canonical URLs. In the performance and index coverage report, Google simplifies and shows the canonical URL, even if the local URL is displayed to users thr...
John Mueller Feb 19, 2021
★★★ Does server response time really slow down Google's crawl more than rendering speed?
Server response time is critical for crawling. Rendering speed (user-side performance aspect) is less important for crawling, but server response time technically slows Google down during the crawl....
John Mueller Feb 19, 2021
★★★ Are Core Web Vitals already impacting your rankings, or should you wait for their activation?
Core Web Vitals are something Google will start using in May. Therefore, it wouldn’t affect your site now (February 2021)....
John Mueller Feb 19, 2021
★★★ Do Core Web Vitals apply to subdomains or just the main domain?
Data from the Chrome User Experience Report (CrUX) is maintained at the origin level, which means the hostname including the subdomain and the protocol. If you have different subdomains, they will be ...
John Mueller Feb 19, 2021
★★ Does consistently creating 'unique and valuable content' truly guarantee a better Google ranking?
Regularly create unique and valuable content that will interest your frequent users. This helps build a loyal readership and can create a reliable information source on the topic you are writing about...
Aurora Morales Feb 17, 2021
★★★ Why do your Core Web Vitals fixes take 30 days to impact your rankings?
Core Web Vitals field data takes approximately 30 days to be updated. A fix applied 10 days before an update is unlikely to be detected immediately. The measurement is not unique to a specific date bu...
John Mueller Feb 12, 2021
★★★ Is Lazy Loading and Responsive Images the Real Key to Core Web Vitals or Just Google's Generic Advice?
Images are often the largest contributor to the overall page size. Google recommends optimizing images by using lazy loading and responsive image techniques to provide fast, high-quality user experien...
John Mueller Feb 10, 2021
★★★ Do Google's Core Web Vitals Really Apply the Same Way to All Types of Websites?
John Mueller also explained on Twitter that as part of the "Page Experience" project, the Core Web Vitals KPIs, which will be implemented in May, will be the same regardless of the type of site. Thus,...
John Mueller Feb 08, 2021
★★★ How does Google group your pages to measure Core Web Vitals?
Google does not have CWV data for every individual page. Pages are grouped according to the available data: at the domain/origin level if there is little data, or by groups of similar pages if there i...
John Mueller Feb 05, 2021
★★★ Is it true that your PageSpeed Insights tests don't accurately reflect what Google really measures regarding Core Web Vitals?
For ranking with Core Web Vitals, Google uses what real users see (field data), not the renders from Googlebot or PageSpeed Insights. Lab tools (controlled environment) provide predictions, not actual...
John Mueller Feb 05, 2021
★★★ Does Google really track Core Web Vitals for AMP and non-AMP pages separately?
Google tracks CWV data for both AMP and non-AMP versions separately based on actual user data. If users go directly to the non-AMP URLs and use Search to access the AMP URLs, both versions will have d...
John Mueller Feb 05, 2021
★★★ Core Web Vitals: Why Do Only Real User Data Matter for Ranking?
For the Core Web Vitals ranking signal, Google uses real user data (field data) from actual users, not lab data. Lab testing tools are helpful for identifying issues and testing fixes, but only real u...
John Mueller Feb 05, 2021
★★★ Why does Google overlook your Lighthouse scores when ranking your site?
For the Core Web Vitals ranking signal, it is the field data that is taken into account, not lab data....
John Mueller Feb 05, 2021
★★ Why do PageSpeed Insights and Googlebot show different results for your site?
PageSpeed Insights is based on Chrome, not Googlebot. Googlebot also uses Chrome for rendering but must obey robots.txt for all embedded content (CSS/JS), unlike PageSpeed Insights. The differences be...
John Mueller Feb 05, 2021
★★★ 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
★★★ Is the text/HTML ratio really useless for SEO?
Google does not consider text/HTML ratio for SEO. It is not a ranking factor. It can play a minor role for speed, or in extreme cases of huge pages (hundreds of MB) exceeding download limits, but this...
John Mueller Feb 05, 2021
★★ Do you really need to wait 30 days to see the impact of your Core Web Vitals optimizations in PageSpeed Insights?
Field data in PageSpeed Insights is delayed by about 30 days. To quickly verify if changes are improving performance, use lab data from testing tools, then wait 30 days to see the actual impact in the...
John Mueller Feb 05, 2021
★★★ Core Web Vitals: Which version truly impacts your ranking when Google shows the AMP?
When Google has data for both AMP and non-AMP versions and displays the AMP version in the results, it is the data from the AMP version that is used for ranking. This principle also applies to interna...
John Mueller Feb 05, 2021
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