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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.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 really ignore the live test in Search Console to diagnose your indexing issues?
To verify how Googlebot really sees your page, examine the 'crawled page' version in the URL Inspection Tool instead of the 'live test'. The crawled version better reflects actual indexing because it ...
Martin Splitt Oct 15, 2020
★★★ Does Google really over-cache your site's resources?
Google's caching is very aggressive and tends to over-cache rather than under-cache. If a resource is momentarily broken, it usually isn't a problem because Google does not fetch resources at every re...
Martin Splitt Oct 15, 2020
★★★ Can an incomplete or outdated sitemap really harm your SEO?
An incomplete or outdated sitemap likely does not affect search performance. The sitemap only helps with crawling slightly better; it does not change ranking. Google crawls the site normally even with...
John Mueller Oct 15, 2020
★★★ Do intermittent server errors really affect your Google indexing?
Temporarily unavailable resource issues are extremely rare in production due to Google's aggressive caching. Even if your server only serves a script once and then fails for a month, you shouldn't see...
Martin Splitt Oct 15, 2020
★★★ Why do Google test tools never reflect what Googlebot truly sees?
Testing tools (URL Inspection Tool, Rich Results Test, Mobile-Friendly Test, AMP Test) always perform a fresh fetch and bypass the cache to test the latest version. This differs from actual crawls and...
Martin Splitt Oct 15, 2020
★★★ Why can't Google share JavaScript cache across your domains?
Google cannot cache a popular JavaScript resource (like jQuery) in one place for use across different domains. If a resource is broken on your site, Google won't fetch it from another site, as this wo...
Martin Splitt Oct 15, 2020
★★★ Is it true that CLS isn't a ranking factor yet—should you still optimize it?
The CLS metric itself would not be the cause of a traffic drop because Google is not yet using Core Web Vitals as a ranking factor. An indirect impact through user experience would take time to manife...
John Mueller Oct 15, 2020
★★★ Why does Google emphasize media queries instead of user-agent for responsive design?
To adapt your site to different screen sizes (mobile vs desktop), rely on CSS media queries and screen size, not on user-agent. This also applies to Core Web Vitals tests that only change the screen s...
Martin Splitt Oct 15, 2020
★★ Does Google's JavaScript cache really work based on origin instead of domain?
Google's caching system for JavaScript and other resources is based on origin, not on a shared domain among multiple sites. Each origin has its own resource cache....
Martin Splitt Oct 15, 2020
★★ Why are your pages disappearing from the Core Web Vitals report in the Search Console?
If a page does not have a minimum amount of reporting data for one of the Core Web Vitals metrics, it is omitted from the report. Therefore, you probably won’t see all your pages in this report....
Daniel Waisberg Oct 06, 2020
★★★ Why does Google emphasize real user data for measuring Core Web Vitals?
The Core Web Vitals report displays the performance of your pages based on real usage data (field data). It relies on three metrics: LCP (Largest Contentful Paint), FID (First Input Delay), and CLS (C...
Daniel Waisberg Oct 06, 2020
★★★ Does Google really rely on real-world data to assess Core Web Vitals?
The Core Web Vitals report shows the performance of your pages based on real user data (field data). The report is based on three metrics: LCP, FID, and CLS....
Daniel Waisberg Oct 06, 2020
★★ Should you really use Lighthouse before every production deployment?
You might also want to check tools like Lighthouse before deploying changes in production to assess your page performance....
Daniel Waisberg Oct 06, 2020
★★ Why don't all your pages show up in the Core Web Vitals report?
If a page does not have a minimum amount of reporting data for one of the Core Web Vitals metrics, it will be omitted from the report. Therefore, you probably won't see all your pages in this report....
Daniel Waisberg Oct 06, 2020
★★★ Do Cookie Banners Really Hurt Your CLS Score and Core Web Vitals?
We know that the CLS (Cumulative Layout Shift) metric, which measures how a page's display changes as it is rendered in the browser window, is one of the criteria considered by the "Core Web Vitals" t...
Martin Splitt Oct 05, 2020
★★ How can you leverage the new news filter in Search Console to boost your performance?
A new filter for news has been added to the Search Console performance report. This filter allows users to gain insights into the performance of news content in the Google Search News tab....
John Mueller Sep 29, 2020
★★★ Should you really ditch AMP if your site is already fast?
If your original site is faster than the AMP version, and speed is your only reason for using AMP, then AMP is not necessary. In the future, fast non-AMP pages with good Core Web Vitals will also be e...
John Mueller Sep 25, 2020
★★ Is it true that Search Console only analyzes a portion of your site’s pages?
The aggregated reports in Search Console (mobile usability, structured data, speed) are based on a sample of site pages, not on all indexed pages. The size of this sample may decrease without indicati...
John Mueller Sep 25, 2020
★★★ Why does Google refuse to disclose how it detects spam?
Google cannot disclose details on spam detection because that would allow spammers to use this information to manipulate the system. This information is deliberately kept confidential to protect the q...
Martin Splitt Sep 23, 2020
★★★ Should you stop tweeting at Google and start using the 'Submit Feedback' button in Search Console?
Google strongly encourages the use of the 'Submit Feedback' button in Search Console instead of Twitter. Feedback through this channel provides quantitative data that is genuinely taken into account t...
Martin Splitt Sep 23, 2020
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