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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
★★ Should you really optimize preloading hints for Googlebot?
Google does not use or barely uses link hints like DNS prefetch, preconnect, preload or prefetch, because its infrastructure works differently from browsers: no synchronous resource fetching, Google-s...
Gary Illyes Feb 26, 2026
★★ Why does Googlebot ignore your resource preloading hints?
When rendering pages, Google caches the necessary resources on its side rather than fetching them each time. This approach saves bandwidth and reduces the load on hosting servers, which explains why c...
Gary Illyes Feb 26, 2026
★★ Do you really have to wait 24 hours for robots.txt changes to take effect with Google?
robots.txt files are cached by Google for a duration that can extend up to approximately 24 hours. Modifications made to robots.txt are therefore not immediate but remain the most sensible method for ...
Gary Illyes Feb 03, 2026
★★ Can Search Console truly reveal what your audience is really searching for?
The performance report in Search Console shows the main queries generating traffic to your site. This allows you to infer your audience's interests and identify queries for which you're not well posit...
Google Dec 18, 2025
★★ Are you leaving 40% of your potential traffic on the table by only tracking performance on the classic Web tab?
It is recommended to check your performance not only on Google Search's main Web tab, but also on other tabs such as Images, Videos, and News to get a complete view of your traffic....
Daniel Waisberg Dec 04, 2025
★★ Is tracking brand searches the hidden metric that's sabotaging your entire SEO strategy?
Monitoring brand versus non-brand search queries enables you to measure the success of brand awareness efforts and identify content gaps with your loyal audience....
Daniel Waisberg Dec 02, 2025
★★ Can a 100 MB background video kill your SEO?
John Mueller explains that a large background video file, even 100 MB, generally has no significant SEO impact as long as the main content and images load quickly first. The key idea is that Google pr...
John Mueller Dec 02, 2025
★★ Should you really analyze your SEO performance over 28 days in Search Console?
The default 28-day period in Search Console Insights is recommended because it provides a good indication of a site's overall performance....
Daniel Waisberg Dec 02, 2025
★★ Will custom Search Console annotations really transform how you track your SEO performance?
Custom annotations in the Search Console performance report are now available to everyone. They allow you to label events affecting your site and are shared with all Search Console users of the site....
John Mueller Nov 17, 2025
★★★ Is Google's AI Mode about to completely reshape your long-tail keyword strategy?
Data from Google's AI Mode searches is already included in Search Console performance reports. Users are performing queries that are nearly three times longer than traditional searches....
John Mueller Nov 17, 2025
★★ Is Google Search Console API Really Slowing Down or Is This Normal?
John Mueller (Google) confirmed that there has been no change in the speed or update frequency of the Google Search Console API. For the past few weeks, users have been complaining about delays in dat...
John Mueller Oct 21, 2025
★★★ Why Does Google Search Console Show Poor LCP When Your Pages Seem Fast?
No, Google Search Console is not off the mark when it reports poor overall LCP while individual pages seem good. Barry Pollard explains that the difference comes from how GSC and CrUX measure Core Web...
Google Oct 07, 2025
★★ Is Keyword Cannibalization Actually a Myth in SEO?
John Mueller stated that "keyword cannibalization" isn't really an SEO problem in itself, and that it's often a misleading label used to mask other real causes of poor page performance. Indeed, the te...
John Mueller Sep 23, 2025
★★★ Does Google Search Console Really Offer a Filter to Measure AI Overviews' Impact on Your Traffic?
No, Google Search Console has not added a dedicated filter for AI Overviews in the performance report, contrary to a widely circulated rumor on social media and certain forums. This rumor originated f...
John Mueller Sep 16, 2025
★★★ Should You Really Avoid Lazy Loading on Above-the-Fold Images to Improve Your SEO?
In a recent episode of Search Off the Record, Martin Splitt warns against using lazy loading for images that are visible as soon as users land on the page: this delays the Largest Contentful Paint (LC...
Martin Splitt Aug 26, 2025
★★★ How Can You Tell a Good Crawler from a Bad One and Why Does It Matter for Your SEO?
Martin Splitt and Gary Illyes recently highlighted the essential attributes of a good crawler: Attributes of a good crawler according to Martin Splitt Support HTTP/2 for better performance and efficie...
Gary Illyes Aug 26, 2025
★★★ Why Do Core Web Vitals Show Different Results Between CrUX and Search Console?
CrUX and Search Console often show different Core Web Vitals results because they measure with distinct approaches: CrUX aggregates user experiences by page views (each visit counts, favoring high-tra...
Google Aug 26, 2025
★★ Is lazy loading destroying your image indexation in Google?
If your images aren't being indexed at scale, this may indicate a lazy loading implementation problem. Verify that images appear correctly in the Google Images index to confirm their detection....
Martin Splitt Aug 21, 2025
★★ Does lazy loading really boost your SEO, or just your page speed?
The main SEO impact of lazy loading comes through performance improvement. Core Web Vitals are a ranking factor, although their weight is generally minimal except in exceptional cases....
Martin Splitt Aug 21, 2025
★★★ Is your custom JavaScript lazy loading library sabotaging Google's ability to index your images?
Custom JavaScript libraries that use attributes like 'data-src' instead of 'src' can prevent Google from indexing images. If the 'src' attribute is not properly populated, the image won't be detected ...
Martin Splitt Aug 21, 2025
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