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

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

🕒 ~1 min 🎯 5 questions
★★★ Do nofollow links really harm your site's SEO ranking?
External links that are clearly marked with the nofollow attribute do not harm SEO rankings. However, it is advisable to apply nofollow to advertising links or user-generated content to maintain link ...
May 30, 2017 ⚡ Analysis available
★★★ Why do your hreflang tags need to point to canonical URLs?
For effective multilingual targeting, it is essential that hreflang tags correctly link canonical URLs together. This ensures that the appropriate language versions are displayed based on the user's l...
May 30, 2017 ⚡ Analysis available
★★ Has Panda really become a permanent quality signal for all Google algorithms?
Panda now operates automatically without requiring manual updates, and the quality information derived from Panda can influence other algorithmic adjustments for the overall evaluation of a website....
May 30, 2017 ⚡ Analysis available
★★★ Can user-generated content harm your site's ranking?
Sites with a lot of user-generated content need to ensure high quality to prevent Google's algorithms from interpreting the site as low quality, which could impact its indexing....
May 30, 2017 ⚡ Analysis available
★★★ Should you really allow Google to crawl filtered Magento pages?
To manage URL variations caused by Magento filters, it is recommended to allow the crawling of these pages while using appropriate canonical tags to indicate the preferred page to index....
May 30, 2017 ⚡ Analysis available
★★★ Does changing your CMS really drop your Google rankings?
Changing your CMS platform can lead to temporary SEO ranking fluctuations due to changes in URL structure, indexing, and algorithmic interpretation that Google must process and reassess....
May 30, 2017 ⚡ Analysis available
★★★ How can you effectively manage a Google manual penalty without losing months of traffic?
In the case of a manual penalty, such as for inappropriate interstitials, it is important to correct the identified issues and submit a review request. Google can provide example URLs or explanations ...
May 30, 2017 ⚡ Analysis available
★★★ Should you redirect obsolete pages or let them return a 404?
For pages on your site that are no longer relevant, you can either delete these pages and accept 404 errors, or redirect them to a new relevant page. Both methods are acceptable to Google....
May 30, 2017 ⚡ Analysis available
★★★ Does Noindex Really Control How Googlebot Crawls Your Site?
John Mueller reminded us on Twitter that while the meta robots "noindex" tag allows you to manage whether or not a page gets indexed on Google, it is by no means a way to control how Googlebot crawls ...
May 29, 2017 ⚡ Analysis available
★★★ How Many Pages from the Same Website Can Appear in Google Results?
John Mueller indicated on Twitter that the same site can appear multiple times (with different pages) on the same results page. There is no (longer any) limit to the number of URLs from the same site ...
May 29, 2017 ⚡ Analysis available
★★ Should Widget Signature Links Always Be Nofollow?
John Mueller indicated in a hangout that if a link wasn't systematically set to "nofollow" in a widget signature (such as "Widget created by [link]"), the search engine could automatically do it itsel...
May 22, 2017 ⚡ Analysis available
★★ Should You Really Avoid Empty Link Anchors for SEO?
We asked the question on Twitter about empty link anchors (for example on an image that would be added via CSS). John Mueller responded that this type of link was followed by Google but that the absen...
May 22, 2017 ⚡ Analysis available
★★ Is it true that no one at Google fully understands the algorithm anymore?
A persistent rumor that has been flourishing in numerous articles for several months claims that "no one at Google would understand the search engine's algorithm globally anymore, as it has become so ...
May 22, 2017 ⚡ Analysis available
★★ Search Console Geolocation vs Hreflang: Which One Delivers the Real SEO Boost?
John Mueller has indicated the difference between geolocation of a site (in Search Console) and the use of the Hreflang tag. Geolocation seems stronger, with a genuine effort from Google to present th...
May 22, 2017 ⚡ Analysis available
★★ Should You Really Disavow All Links Coming from Spammy Sites?
John Mueller indicated that links from "spammy" sites are not necessarily unnatural. And that the priority should be to track down (and disavow) unnatural links. He also explained that you can have na...
May 22, 2017 ⚡ Analysis available
★ How Will Google Roll Out Mobile First Indexing: All at Once or Site by Site?
John Mueller indicated in a hangout that it is possible that the Mobile First project (currently planned for 2018) will be launched not all at once for all websites, but for batches of sites, one afte...
May 22, 2017 ⚡ Analysis available
★★★ Should you really eliminate mobile pop-ups to avoid a Google penalty?
Pop-ups should be transformed into less intrusive banners, especially on mobile devices, to avoid affecting user experience and potentially visibility in search results....
May 17, 2017 ⚡ Analysis available
★★★ Is original content really a ranking factor for Google?
It's crucial for SEO to have unique and original content on each page, rather than relying solely on generic or automatically generated content....
May 17, 2017 ⚡ Analysis available
★★ Can AMP pages really take the place of your mobile pages in mobile-first indexing?
AMP pages can serve as mobile pages in mobile-first indexing if they meet all necessary requirements, but this can be complex to configure....
May 17, 2017 ⚡ Analysis available
★★★ Does Google really render all JavaScript pages for SEO?
Google tries to render almost all pages, including those using JavaScript. It is recommended to keep separate versions of JavaScript files to facilitate the updating and proper rendering of pages....
May 17, 2017 ⚡ Analysis available
🔔

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.