What does Google say about SEO? /
The Mobile category consolidates all official Google statements regarding website optimization for mobile devices and their impact on organic search performance. Since the implementation of mobile-first indexing, Google systematically prioritizes the mobile version of websites for indexing and ranking in search results. This section compiles essential guidance on responsive design, smartphone loading speed optimization, viewport configuration, and technologies like AMP. SEO practitioners will find Google's official positions on major updates such as Mobilegeddon, which transformed ranking criteria by favoring mobile-friendly sites. Understanding these guidelines has become imperative: with over 60% of global web traffic originating from mobile devices, mobile user experience directly determines organic visibility. Google's declarations on adaptive design, common responsive implementation errors, and mobile-specific Core Web Vitals criteria constitute strategic resources for any SEO professional aiming to optimize SERP performance and deliver an exemplary mobile experience. This category serves as a comprehensive reference for navigating Google's evolving mobile requirements and ensuring websites meet the search engine's standards for smartphone accessibility, usability, and technical excellence.
Quick SEO Quiz

Test your SEO knowledge in 5 questions

Less than a minute. Find out how much you really know about Google search.

🕒 ~1 min 🎯 5 questions
★★★ How does Google actually segment your Core Web Vitals by groups of pages?
For Core Web Vitals, Google uses data from the Chrome User Experience Report and segments the site into groups. For specific URLs, Google finds the most appropriate group. If AMP pages have a separate...
John Mueller Mar 12, 2021
★★★ Why is Google ignoring desktop Core Web Vitals in its ranking algorithm?
The Page Experience ranking factor (including Core Web Vitals) applies to mobile and not to desktop, at least initially. The official announcement concerns only mobile, where performance barriers are ...
John Mueller Mar 12, 2021
★★ Should you really redirect your old AMP URLs to the new ones?
Redirecting old AMP URLs to the new ones is ideally recommended, but it's less critical than for normal pages. Google refreshes the AMP cache quickly and notices URL changes within a few days....
John Mueller Mar 12, 2021
★★★ How does Google actually segment your Core Web Vitals by page groups?
Google uses data from the Chrome User Experience Report and segments the site into groups. For specific URLs, Google finds the most appropriate group. If AMP pages are in a separate group, their metri...
John Mueller Mar 12, 2021
★★★ Is AMP really neutral for Google rankings, or does it hide an invisible visibility lever?
AMP is not a direct ranking factor. However, removing AMP can lead to a drop in traffic if the site benefits from search features like Top Stories that currently require AMP. This will change with the...
John Mueller Mar 12, 2021
★★★ Is it true that Google really indexes hidden content in responsive CSS?
If an element is in the DOM but hidden on mobile via responsive CSS, Google can still index it. Google attempts to determine which parts are visible and values them for ranking, but the content in the...
John Mueller Mar 12, 2021
★★ Does the Chrome UX Report really count your cached AMP pages?
The Chrome User Experience Report takes into account what users actually see. If it's a valid AMP page served from the cache, Google uses this data. If it’s not a valid AMP and cannot be served from t...
John Mueller Mar 12, 2021
★★★ Does Page Experience really only matter for mobile SEO?
The ranking factor related to page experience and Core Web Vitals applies to mobile and not to desktop, at least initially. It is on mobile where the obstacles are greatest, with limited processors an...
John Mueller Mar 12, 2021
★★ Is it necessary to redirect your AMP URLs during a change?
When changing AMP URLs, redirections are less critical than for standard URLs because Google refreshes the AMP cache quickly. The delay between discovery and update is a few days, but it is still reco...
John Mueller Mar 12, 2021
★★ Does font size really influence Google rankings?
Font size (14px vs 12px) does not affect rankings. The important factor is mobile compatibility, which remains a ranking factor. The rest falls under user experience....
John Mueller Feb 26, 2021
★★ Does CSS font size really impact your positions on Google?
The variation in font size (14px vs 12px) on a page does not affect ranking. The only important consideration is mobile compatibility, which remains a ranking factor. The rest pertains to user experie...
John Mueller Feb 26, 2021
★★ Does the Mobile-Friendly Test truly reflect what Google sees of your page?
The Mobile-Friendly Test or the Rich Results Test allow you to check how Google actually sees your page. It is sometimes necessary to test several times because the tool may expire and fail to load im...
Kristina Azarenko Feb 25, 2021
★★★ Is mobile-first indexing truly the top priority for your SEO?
Google primarily uses mobile-first indexing, which means that Google mainly looks at the mobile version of your website rather than the desktop version. Therefore, it is essential to ensure that every...
Kristina Azarenko Feb 25, 2021
★★ Should you really wait for Google to switch your site to mobile-first indexing?
A site that has not yet migrated to mobile-first indexing will naturally have more desktop crawl than mobile. This is not a problem in itself, but it is essential to check if the site is ready for mig...
Google Feb 25, 2021
★★★ Should you really optimize Google Images differently for mobile and desktop?
Users are searching on Google Images more from mobile than from desktop. It is important to design your site for all types and sizes of devices. Use the mobile-friendly test tool to test your pages....
John Mueller Feb 10, 2021
★★★ Is Lazy Loading and Responsive Images the Real Key to Core Web Vitals or Just Google's Generic Advice?
Images are often the largest contributor to the overall page size. Google recommends optimizing images by using lazy loading and responsive image techniques to provide fast, high-quality user experien...
John Mueller Feb 10, 2021
★★★ Should you really enable max-image-preview:large to get featured in Discover?
For large image previews, images must be of appropriate size and the feature must be enabled either with the max-image-preview:large robots meta tag or by using AMP....
John Mueller Feb 10, 2021
★★★ How does Google measure Core Web Vitals on your AMP and non-AMP pages?
Google tracks Core Web Vitals data from real users. If users access the AMP version via Search and the non-AMP version directly, Google can follow both versions separately. For ranking purposes, Googl...
John Mueller Feb 05, 2021
★★★ Core Web Vitals: Which version truly impacts your ranking when Google shows the AMP?
When Google has data for both AMP and non-AMP versions and displays the AMP version in the results, it is the data from the AMP version that is used for ranking. This principle also applies to interna...
John Mueller Feb 05, 2021
★★★ Does Google really track Core Web Vitals for AMP and non-AMP pages separately?
Google tracks CWV data for both AMP and non-AMP versions separately based on actual user data. If users go directly to the non-AMP URLs and use Search to access the AMP URLs, both versions will have d...
John Mueller Feb 05, 2021
🔔

Get real-time analysis of the latest Google SEO declarations

Be the first to know every time a new official Google statement drops — with full expert analysis.

No spam. Unsubscribe in one click.