What does Google say about SEO? /
John Mueller is one of Google's most active spokespeople on search engine optimization topics. As a Search Advocate, he regularly answers the SEO community's questions during Google Search Central sessions and on social media. His statements are a prime source of information for understanding how Google Search works and the best practices to follow.
Quick SEO Quiz

Test your SEO knowledge in 5 questions

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🕒 ~1 min 🎯 5 questions
★★★ Does Google really impose page-by-page granular penalties instead of site-wide ones?
Google does not have different levels of demotion at the site level (either everything gets demoted or nothing). The approach is as granular as possible, page by page. There is a smooth transition rat...
Feb 05, 2021 ⚡ Analysis available
★★★ Why does Google Discover traffic drop off overnight without warning?
Google Discover traffic tends to be highly variable, going from a lot to zero quickly. The algorithms can decide that it's relevant to show a site in Discover and then suddenly stop. This is not relat...
Feb 05, 2021 ⚡ Analysis available
★★ Is machine learning for images truly a secondary SEO factor?
While Google uses machine learning to understand the content of images, it is more of an auxiliary factor than a primary one. Determining the relevance of an image solely based on its content is chall...
Feb 05, 2021 ⚡ Analysis available
★★ Does Google prioritize image quality over the display order on the page?
Google uses several factors to determine which image to display from a page: titles, filenames, captions, alt text, and also the quality of the image. The systems may sometimes prefer a higher quality...
Feb 05, 2021 ⚡ Analysis available
★★★ Is it true that Google penalizes category pages lacking strict thematic consistency?
If a category page displays random products without cohesion (e.g., a 'blue' category featuring mixed socks and jackets), Google will struggle to recognize the page as a landing page. All products nee...
Feb 05, 2021 ⚡ Analysis available
★★★ Does variable content on e-commerce pages harm SEO?
For e-commerce pages with products that change regularly (inventory addition/removal), it's completely normal and acceptable. Google recognizes the specific content for this topic on this page and wil...
Feb 05, 2021 ⚡ Analysis available
★★★ Is it true that the text/HTML ratio is completely irrelevant for Google SEO?
Google does not use the concept of text/HTML ratio as an SEO ranking factor. Many tools calculate this metric, but it does not affect SEO. Only two extreme cases can pose a problem: reduced page speed...
Feb 05, 2021 ⚡ Analysis available
★★★ Do 301 redirects really pass on 100% of PageRank and link signals?
With a 301 redirect, Google groups the old and new URL together and transfers all signals (including links) to the canonical URL, usually the destination of the redirect. To ensure that the new URL is...
Feb 05, 2021 ⚡ Analysis available
★★ Why does Google keep rechecking your old 404 URLs for years?
Google keeps old 404 URLs in its systems and periodically rechecks them (sometimes once a year) to ensure they still return 404. This is not a problem. On older sites, the number of 404 URLs naturally...
Feb 05, 2021 ⚡ Analysis available
★★★ How does Google really group your pages to evaluate Core Web Vitals?
Google does not have Core Web Vitals data for each page individually. Pages are grouped based on the amount of available data. This can be at the entire domain level or among groups of similar pages. ...
Feb 05, 2021 ⚡ Analysis available
★★★ Core Web Vitals: Why Do Only Real User Data Matter for Ranking?
For the Core Web Vitals ranking signal, Google uses real user data (field data) from actual users, not lab data. Lab testing tools are helpful for identifying issues and testing fixes, but only real u...
Feb 05, 2021 ⚡ Analysis available
★★★ Does PageSpeed Insights really reflect what Google sees on your site?
PageSpeed Insights is based on Chrome, not on Googlebot. Googlebot also uses Chrome for rendering but must follow robots.txt for embedded resources (CSS, JS). PageSpeed Insights is not subject to robo...
Feb 05, 2021 ⚡ Analysis available
★★★ How long should you really expect to wait for a manual link action to be lifted?
Manual actions related to links can take several months to be reviewed. Submitting a reconsideration request again does not create an additional penalty, but duplicate requests are ignored. The team f...
Feb 05, 2021 ⚡ Analysis available
★★★ Should you create broad topical content to boost your authority in Google's eyes?
Creating content around a main topic (e.g., laptop reviews if you sell laptops) helps Google recognize your thematic expertise. It also helps users trust you. Google can then show your site for search...
Feb 05, 2021 ⚡ Analysis available
★★★ Does rel=canonical to the source really protect syndicated content?
For syndicated content, Google recommends using rel=canonical to the original source. If not possible, Google will attempt to recognize the syndicated content. The original site will generally be favo...
Feb 05, 2021 ⚡ Analysis available
★★ Should you optimize the user experience before tackling SEO?
SEO and improving the user journey are distinct topics. SEO is not used to enhance the user journey. First, we optimize the user experience, then we apply SEO to improve visibility in search results. ...
Feb 05, 2021 ⚡ Analysis available
★★ Why does Google convert your SVGs to PNGs and how does it affect your image SEO?
Google converts SVG files into pixel images (PNG) for internal processing and thumbnail display in Image Search. This allows SVGs to be treated like other image formats and to create thumbnails at the...
Feb 05, 2021 ⚡ Analysis available
★★★ Can intrusive interstitials really lower your Google ranking?
Intrusive interstitials that prevent users from accessing the main content are regarded as a negative ranking factor by Google. If an interstitial blocks access to the product page, that's problematic...
Feb 05, 2021 ⚡ Analysis available
★★★ Do user comments really influence your page rankings?
Google considers comments as part of the page content. Google often recognizes that this is a comments section and treats it differently. If users find your pages through comments, removing those comm...
Feb 05, 2021 ⚡ Analysis available
★★ Should you really match the query in the title to rank well?
There is no absolute rule indicating that an exact match title ranks better than a user-focused title. Google understands synonyms and context. The recommendation is to test different titles to see wh...
Feb 05, 2021 ⚡ Analysis available
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