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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
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★★ How can you effectively measure FID on new pages?
For new pages or URLs not included in the Chrome User Experience Report, it is possible to measure FID yourself by adding JavaScript that uses the same APIs. Core Web Vitals can be accessed through Ja...
Patrick Kettner Sep 21, 2021
★★★ Can Changing Your CMS Theme Really Impact Your SEO Rankings?
John Mueller explained in an SEO video that changing the theme on your CMS (WordPress, Drupal, Prestashop, or others) can impact your SEO, depending on the changes that are made. For example, the mana...
John Mueller Sep 20, 2021
★★★ Why do high-traffic pages have a greater influence on Core Web Vitals?
Core Web Vitals data is based on actual traffic (field data), not a simple average of pages. Pages with higher traffic carry more weight in the calculation. It is essential to optimize the pages that ...
John Mueller Sep 17, 2021
★★★ How does your theme choice impact SEO performance?
The chosen theme determines the loading speed of pages for users, an important factor for SEO....
John Mueller Sep 14, 2021
★★★ Does Optimizing Your Lighthouse Score Really Improve Your Google SEO?
In response to a tweet from someone reporting the existence of plugins on Shopify that manipulate LightHouse scores to supposedly achieve better SEO, John Mueller was categorical: "Lighthouse scores d...
John Mueller Sep 13, 2021
★★★ Does the type of hosting really influence Google's crawling?
The type of hosting (shared, VPS, etc.) does not affect the efficiency or volume of crawling by default. Only actual performance matters: a hosting can be slow regardless of its type. It's the slownes...
John Mueller Sep 10, 2021
★★★ Could New CSS Properties Be an Untapped SEO Opportunity?
Google does not make any special considerations for new CSS properties or HTML tags in terms of SEO. HTML content is indexed normally. Any potential impact would occur through Core Web Vitals if a CSS...
John Mueller Sep 10, 2021
★★★ How is Google's new URL Inspection Tool transforming the way we analyze indexed content?
In Search Console, use the URL Inspection Tool and then 'View Crawled Page' to see the actual rendered HTML indexed by Google. It's an alternative to the cache operator, which doesn't work well for Ja...
Martin Splitt Sep 09, 2021
★★★ Why shouldn't you rely on robots.txt to protect your sensitive content?
A robots.txt file is not an appropriate or effective method for blocking sensitive or confidential content. It does not prevent your server from delivering those pages to a browser that requests them....
Lizzi Sassman Sep 09, 2021
★★ How is the Core Web Vitals report from Search Console transforming the way we identify slow pages?
In Search Console, the Core Web Vitals report shows which pages are slow. For pages with insufficient data, use PageSpeed Insights or Lighthouse to identify excessive JavaScript....
Martin Splitt Sep 09, 2021
★★★ Is lazy loading truly beneficial for your SEO?
Lazy loading can be used without violating Google's guidelines. For images and iframes, use the loading='lazy' attribute. For other content, utilize the Intersection Observer along with a structured p...
Martin Splitt Sep 09, 2021
★★ Why do Google’s Core Web Vitals rely on the Chrome User Experience Report?
The Core Web Vitals data used for rankings comes from the Chrome User Experience Report. For this data to be collected, users must have consented to share their data with Google....
John Mueller Sep 03, 2021
★★★ Why Are Mobile-Friendly Reports Not Comprehensive for SEO?
Mobile usability reports, Core Web Vitals, and structured data in Search Console show a sample of URLs. A decrease in the number of valid URLs does not mean that other pages have issues, only that the...
John Mueller Sep 03, 2021
★★★ Should you still optimize Core Web Vitals once they're in the green?
Once Core Web Vitals are in the green zone according to real user metrics, further improving the scores offers no additional SEO benefits. Being in the green simply ensures the stability of good perfo...
John Mueller Aug 28, 2021
★★★ Should you really optimize Core Web Vitals to rank at the top?
Core Web Vitals are part of the Page Experience ranking factor, but they don't replace everything. No site is perfect in all aspects. You can rank well by excelling in certain areas without being perf...
John Mueller Aug 28, 2021
★★★ Does Server Response Time in Search Console Really Impact Your SEO Rankings?
The server response time displayed in Search Console (crawled from the US) is not used for ranking purposes. Google employs Core Web Vitals based on actual user experiences to determine ranking speed ...
John Mueller Aug 20, 2021
★★★ Why does Google prioritize field data over lab data for SEO?
For ranking, Google uses field data from Search Console that shows the real-world experience of users, not lab data from Lighthouse. While Lighthouse tests are useful for identifying improvements, the...
John Mueller Aug 20, 2021
★★★ How does Google's new removal tool transform your SEO strategy?
The temporary removal tool in Search Console simply hides pages in search results for 6 months, without altering indexing or crawling. Google continues to crawl and reindex the page normally during th...
John Mueller Aug 20, 2021
★★ How can you avoid the negative impacts of network caching on your SEO tests?
To bypass network caching issues when testing with PageSpeed Insights, adding a random parameter after the URL (e.g., ?123) generally forces intermediate servers to fetch the most recent version of th...
John Mueller Aug 20, 2021
★★★ How crucial is loading speed for SEO success?
Google discovered the importance of speed by deliberately introducing a delay of a few hundred milliseconds in search results for a segment of users during an experiment. This significantly decreased ...
Gary Illyes Aug 19, 2021
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