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metrics enables webmasters to align technical optimizations with actual ranking signals rather than assumptions or outdated practices.
★★★ Is your lazy loading blocking Google from seeing your images?
To verify that lazy loading works correctly for SEO, use the URL inspection tool in Search Console and examine the rendered HTML. All image URLs must appear in the 'src' attribute of image tags....
Martin Splitt Aug 21, 2025
★★★ Should you really ban lazy loading from hero images?
Never apply lazy loading to images that are immediately visible (hero image, header). This delays their loading and negatively impacts the Largest Contentful Paint, because the browser cannot preload ...
Martin Splitt Aug 21, 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
★★★ Is the HTML loading=lazy attribute really enough to prevent indexation issues?
Browsers natively support lazy loading via the 'loading=lazy' attribute for images and iframes. This HTML method is preferable to JavaScript libraries because it is simpler and avoids potential indexa...
Martin Splitt Aug 21, 2025
★★ Is native HTML lazy loading really enough to optimize your page crawl?
Native HTML lazy loading only works for image and iframe elements. To lazy load other content (videos, widgets, comments, API content), custom JavaScript remains necessary....
Martin Splitt Aug 21, 2025
★★ Does WordPress's native lazy loading really boost your SEO performance?
WordPress now implements native lazy loading by default for images thanks to a contribution from Felix Arntz, an engineer at Google. This practice has become widespread across modern CMS platforms....
Martin Splitt Aug 21, 2025
★★★ Should You Really Be Worried About GEO, AIO, and AEO for Your SEO?
John Mueller from Google warns against the proliferation of new AI-related SEO acronyms such as GEO, AIO, or AEO, emphasizing that the more insistent and urgent their promotion, the more likely it is ...
John Mueller Aug 19, 2025
★★ Can Core Web Vitals Sabotage Actually Hurt Your SEO Rankings?
The attack known as "Core Web Vitals poisoning" aims to artificially sabotage a website's web performance indicators (LCP, FID, CLS) in order to alter the scores measured by tools like webvitals-js. J...
John Mueller Aug 19, 2025
★★★ Should You Delete Past Event Pages or Keep Them for SEO?
John Mueller provided practical advice on the SEO management of web pages for shows, events or performances once they have ended. He compares this situation to that of out-of-stock products in e-comme...
John Mueller Jul 29, 2025
★★★ Why does Martin Splitt place such strong emphasis on installing Search Console and measurement tools?
It is necessary to configure Search Console and a measurement system (analytics or similar) to track SEO performance and understand whether changes have a positive impact on your site's objectives....
Martin Splitt Jul 10, 2025
★★★ Do You Really Need Perfectly Valid HTML Code to Rank Well on Google?
In an episode of the Search Off the Record podcast, John Mueller and Martin Splitt revealed that the overwhelming majority of well-ranked sites have invalid HTML, without it harming their SEO: "Search...
John Mueller Jul 08, 2025
★★ Will Search Console's Core Web Vitals recommendations finally make a real difference?
Search Console now displays recommendations when individual Core Web Vitals elements are particularly poor. These measurements are based on real user experience and poor values can discourage visits....
John Mueller Jul 01, 2025
★★★ Are Core Web Vitals Really a Ranking Factor in Google?
Core Web Vitals are useful for monitoring performance and detecting issues, but they don't directly correspond to SEO rankings. Improving a score from 85 to 87 doesn't guarantee better positioning....
Martin Splitt Jun 26, 2025
★★★ Should you markup your loyalty program to unlock rich results in Google Search?
Google now supports loyalty program markup (Loyalty Program) in structured data. By adding this markup to Organization and Product schemas, search results can display loyalty program benefits and rewa...
Google Jun 26, 2025
★★ Are you really leaving all those Google scripts slowing down your site?
Integrating every possible Google JavaScript snippet on a site can make it extremely slow and cause rendering issues, which can have negative effects on SEO....
John Mueller Jun 26, 2025
★★★ Is cutting back on JavaScript really the secret to better SEO performance?
If you can avoid JavaScript for what you're doing, you absolutely should. However, JavaScript remains necessary for certain features like enabling a website to work offline. This recommendation is hig...
Martin Splitt Jun 12, 2025
★★ Why Does Using Multiple URLs for the Same Image Hurt Your SEO?
Google recently clarified its SEO recommendations for images: it is advised against using multiple different URLs or file names for the same image on a website, even if it is embedded on multiple page...
Google May 20, 2025
★★ How long does it actually take Google to detect and process a noindex tag fix?
When you fix errors like accidentally applied noindex tags, Google can take time to recognize these changes. Crawl speed varies depending on site sections. Be patient after correcting this type of err...
Google Mar 27, 2025
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