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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
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★★★ Should you be concerned about the 28-day update delay for Core Web Vitals?
Core Web Vitals field data takes 28 days to update in Search Console. It is possible to use Google Analytics with an additional script to track your own field data in near real-time....
John Mueller Jun 04, 2021
★★★ Why does Google rely on field data for Core Web Vitals rankings?
For ranking based on Core Web Vitals, Google uses field data from real users, not lab data from tests. Field data reflects the actual user experience across different devices and connections....
John Mueller Jun 04, 2021
★★★ How Do Redirects Actually Impact Your Core Web Vitals Scores?
John Mueller indicated during a webmaster hangout that redirecting one URL to another will also transfer the Core Web Vitals scores (LCP, FID, CLS) before they are recalculated for the new URL......
John Mueller May 31, 2021
★★★ Do third-party scripts really slow down your SEO performance?
Third-party JavaScript scripts that slow down a page (such as reCAPTCHA or Google Ads) are included in the speed assessment. Google does not make exceptions for its own scripts. If a script disrupts t...
John Mueller May 28, 2021
★★★ Why do real-world data outshine Lighthouse for your SEO performance?
Lighthouse data are useful lab simulations that help identify improvement opportunities. For ranking, it’s the field data visible in PageSpeed Insights and Search Console that truly matters....
Google May 27, 2021
★★★ How do Core Web Vitals really impact SEO with CrUX data?
<p>For Page Experience, Google primarily uses field data at the page level from the Chrome User Experience Report (CrUX). If this data is insufficient, it resorts to origin or groups of similar pages ...
Google May 27, 2021
★★★ Does JavaScript Really Affect Crawlability?
JavaScript generally has no impact on crawlability. The blocking of the main thread by JavaScript is a loading performance issue, not a crawling issue. Crawling and rendering are two distinct steps....
Martin Splitt May 26, 2021
★★ Why should you steer clear of inline JavaScript for large SEO scripts?
You should not inline large amounts of JavaScript because it prevents caching. External JavaScript files can be cached and are only downloaded occasionally, unlike inline code which must be downloaded...
Martin Splitt May 26, 2021
★★★ Do Google’s third-party tools really impact your SEO?
Google Search treats all third-party tools as third parties, including Google Analytics, Google Ads, reCAPTCHA, and Tag Manager. They do not receive any special treatment and can impact performance ju...
Martin Splitt May 26, 2021
★★ Why is page speed essential for SEO rankings?
Page speed is one of many ranking factors. If a competing site is faster, all else being equal, it may gain a ranking advantage due to its speed, not because of the technology used....
Martin Splitt May 26, 2021
★★ Does blocking the main thread really impact SEO?
The fact that JavaScript blocks the main thread is not a problem for Google's rendering. However, it impacts real user experience by making the site unresponsive, which in turn affects page speed, a r...
Martin Splitt May 26, 2021
★★★ Does AMP really affect your website's SEO?
AMP is not a ranking factor. AMP can be used on large dynamic sites, not just for news. If AMP makes the site faster, it can help through the page speed factor, but not directly through AMP....
Martin Splitt May 26, 2021
★★ Do You Really Need to Achieve All 3 Core Web Vitals Scores to Improve Your SEO Rankings?
The past week has brought its usual harvest of information about the Core Web Vitals / Page Experience project, not always very precise: first of all, Jeffrey Jose (Google) indicated during GoogleI/O ...
John Mueller May 25, 2021
★★★ How do redirects really impact your SEO metrics?
When Google encounters a redirect, all search signals are transferred and applied to the new URL, including the Core Web Vitals metrics from the Chrome User Experience Report. Fluctuations are expecte...
John Mueller May 22, 2021
★★ How do Core Web Vitals truly affect URL indexing?
Chrome collects data from the Chrome User Experience Report by URL. For ranking, Google uses signals from the pages that are actually displayed in search results, not from all pages of the site....
John Mueller May 22, 2021
★★★ What are the key differences between live testing and Google indexing?
Two major differences between live testing and the indexing infrastructure are: (1) fetch deadlines are shorter in live tests, and (2) indexing uses a cache while live testing occurs in real-time. Cac...
Martin Splitt May 18, 2021
★★ How can the new page experience report revolutionize your SEO?
The Search Console page experience report provides valuable metrics such as the percentage of URLs with a good experience and their impressions in search, allowing site owners to quickly assess their ...
Jeffrey May 18, 2021
★★★ How can mastering the CLS score boost your SEO?
For CLS, a score of 0.1 or lower is considered good, while a score of 0.25 or higher is deemed poor. Google uses the updated definition that limits the maximum window to 5 seconds....
Jeffrey May 18, 2021
★★★ Are Google's Core Web Vitals now crucial for SEO rankings?
Google employs three Core Web Vitals for ranking: Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). These metrics measure loading performance, interactivity, ...
Jeffrey May 18, 2021
★★ Does hidden code in React really affect SEO?
In a React application, having code that hides certain elements on mobile and others on desktop within the same code is not a crawlability concern, as Google can see both versions of the code....
Martin Splitt May 18, 2021
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