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
★★★ Does Google always prioritize the original content source first?
Even if Google identifies that content was published first on site A, it may rank site B, which copied this content but added real value (comments, analyses). Google prioritizes relevance and user uti...
Aug 21, 2020 ⚡ Analysis available
★★★ Does Google really combine signals from multiple links pointing to the same page?
Contrary to popular belief, Google does not limit itself to the first link found on a page. There is no single defined behavior: Google can combine signals from multiple links pointing to the same des...
Aug 21, 2020 ⚡ Analysis available
★★★ What size of pop-up actually avoids Google’s penalty for intrusive interstitials?
Google penalizes intrusive pop-ups that occupy most of the screen and prevent users from accessing the main content. If a pop-up covers a small part of the screen (about 15%) and does not interfere wi...
Aug 21, 2020 ⚡ Analysis available
★★★ Do cascading internal 301 redirects really drain SEO juice?
Even if internal navigation points to old URLs that redirect via 301, Google follows the chain and treats the link as going directly to the final destination (the canonical). No loss of value. Users c...
Aug 21, 2020 ⚡ Analysis available
★★★ Is advertising on your site harming your SEO?
Displaying ads is not an SEO problem in itself. Google checks that the main content remains visible above-the-fold (not just ads) and that the site adheres to the Better Ads Standard (otherwise, Chrom...
Aug 21, 2020 ⚡ Analysis available
★★ Are URL parameters still an obstacle for organic search?
URLs with parameters (query strings) have been perfectly acceptable to Google for a long time. The URL parameter management tool is only useful for very large sites (millions of pages) generating an e...
Aug 21, 2020 ⚡ Analysis available
★★★ Does Nofollow still affect crawling without passing on PageRank?
Google can now follow nofollow links to discover new URLs and potentially index them. However, the transmission of PageRank and ranking signals through these links remains independent of the crawl dec...
Aug 21, 2020 ⚡ Analysis available
★★ Is it really necessary to manually de-index your old pagination URLs?
When pagination is removed, old paginated URLs either return the homepage (automatically canonicalized) or a 404 (de-indexed upon recrawl). Google manages this naturally over time without any manual d...
Aug 21, 2020 ⚡ Analysis available
★★ Can automated DMCA complaints harm your visibility on Google?
Some large content providers automatically crawl the web and file DMCA complaints in an automated manner, generating a very high volume of DMCA requests each day. Google processes these complaints but...
Aug 21, 2020 ⚡ Analysis available
★★★ Does a poorly configured sitemap really diminish your crawl budget?
The Crawl Budget is determined by two factors: Google's demand (how many pages need to be recrawled) and technical limits (server capacity, optional limit in Search Console). A poorly configured sitem...
Aug 21, 2020 ⚡ Analysis available
★★★ Do internal 301 redirects really dilute PageRank?
If your internal links point to URLs that redirect via 301, Google follows the redirect, identifies the final URL as canonical, and treats the link as if it points directly to the destination. No loss...
Aug 21, 2020 ⚡ Analysis available
★★ Should you really ditch display:none to differentiate mobile and desktop?
Using display:none to hide content based on the device (desktop or mobile) does not pose a major issue for Google, but a purely responsive layout is recommended in the long run to facilitate maintenan...
Aug 21, 2020 ⚡ Analysis available
★★ Can the JavaScript History API really force Google to change your canonical URL?
When JavaScript uses the History API to change the URL after the page has loaded, Google may interpret this change as a redirect and choose the modified URL as canonical. This behavior depends on the ...
Aug 21, 2020 ⚡ Analysis available
★★★ Do affiliate links really harm your website's SEO?
The presence of affiliate links on a site is not a sign of poor quality. Affiliate sites become problematic when they lack value-added content, for example, if they simply copy product feeds or genera...
Aug 21, 2020 ⚡ Analysis available
★★★ Is the rel=canonical really mandatory on all AMP pages, even standalone ones?
For paired AMPs (classic page + AMP), the canonical is required. For standalone AMPs (no classic version), the page must canonicalize to itself. This rule is independent of hreflang and translations....
Aug 21, 2020 ⚡ Analysis available
★★ Why does Google make it impossible to use Search Console Insights without Analytics?
Google Search Console Insights combines data from Google Analytics and Search Console to provide a simplified view. Both data sources are required for the tool to function since it integrates informat...
Aug 21, 2020 ⚡ Analysis available
★★ Can Google really treat URL changes made by JavaScript and the History API as redirects?
When JavaScript uses the History API to modify the URL after loading (e.g., simplifying parameters), Google may interpret this as a redirect to the new URL and choose it as canonical. This can be veri...
Aug 21, 2020 ⚡ Analysis available
★★ Is it really necessary to nofollow site-wide links to your legal pages to optimize PageRank?
Having 10 links instead of just one to a legal page (privacy, contact) on every page of the site probably wouldn't change anything. Google understands that these pages are linked everywhere without be...
Aug 21, 2020 ⚡ Analysis available
★★ Do links in embedded tweets really affect your SEO?
When a tweet is embedded on a third-party site, Google can technically treat the links in that tweet as part of the page. However, Twitter heavily uses nofollow: these links generally have no direct S...
Aug 21, 2020 ⚡ Analysis available
★★★ Is it really necessary to optimize the first link on a page for SEO?
Contrary to the common belief that only the first link matters, Google can take multiple links pointing to the same URL on a page into account and combine their anchor signals. There is no need to man...
Aug 21, 2020 ⚡ Analysis available
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