What does Google say about SEO? /
Domain age and historical factors remain hotly debated topics in the SEO community. This category compiles Google's official statements regarding how domain age, history, and accumulated reputation influence search rankings. SEO professionals frequently question whether the sandbox effect truly exists for new websites, whether older domains hold inherent advantages, and how a site's history impacts current performance—including previous ownership changes, past penalties, and archived content. Google representatives have consistently addressed these concerns, particularly regarding the concept of trust built over time. Understanding these official positions helps practitioners separate persistent myths from actual ranking factors recognized by Google's algorithms. This knowledge proves invaluable when acquiring expired domains, conducting site migrations, or implementing rebranding strategies where historical signals can significantly impact future SEO performance. These declarations provide clarity on what truly matters: quality content and user experience rather than mere domain age, helping SEO specialists make informed strategic decisions based on verified information rather than speculation or outdated assumptions about temporal ranking factors.
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
★★★ Should You Worry About Google Search Console's 10,000-Pixel Rendering Limit?
The web page rendering in Search Console ("Crawl > Fetch as Google" section) stops at the 10,000th pixel according to a user's test. But, of course, all the HTML code is crawled and indexed. It's just...
Google Aug 21, 2017
★★ What are the only two fields in an XML sitemap that Google actually cares about?
John Mueller explained on Twitter that in XML files, the two most important fields are the URL (<loc>) and the last modification date (<lastmod>)....
John Mueller Aug 21, 2017
★★★ How Does Google Actually Handle Invalid or Non-Standard HTML Attributes in Your Page Code?
John Mueller explained on Twitter that when Google "parses" (analyzes) the HTML code of a page, erroneous attributes (badly coded, non-existent, non-standard...) of a tag are generally ignored....
John Mueller Aug 21, 2017
★★★ Does URL Architecture Really Impact Your Google Rankings?
John Mueller indicated on Twitter that the URL structure (the fact that the hierarchy is shown in a page's address, as opposed to a site where all URLs would be at the root level, for example), has on...
John Mueller Aug 21, 2017
★★★ Do Internal and External Links Really Carry Different Weight for Google Rankings?
When asked "Are there differences in how Google treats internal versus external links?", John Mueller responded: "definitely"....
John Mueller Aug 21, 2017
★★★ How Can You Prevent Google from Indexing Your Pre-Production Site?
John Mueller posted a fairly lengthy message on Google+ about the best way to prevent a test site (pre-production) from being indexed by Google, as we unfortunately see so often. If this mishap happen...
John Mueller Aug 21, 2017
★★ Can You Combine Noindex and Canonical Tags on the Same Page?
A user asked John Mueller the following question: "if a page contains both a 'noindex' tag and a 'canonical' tag, does the canonical transmit the indexing prohibition to the canonical page?" John Muel...
John Mueller Aug 14, 2017
★★★ Does CSS File Size Really Impact Your SEO Rankings?
John Mueller indicated on Twitter that the size of a stylesheet (CSS) file does not impact the search engine's algorithm. It can be several tens of MB....
John Mueller Aug 14, 2017
★★★ Does the Last-Modified Meta Tag Actually Help Your SEO Rankings?
John Mueller explained on Twitter that Google ignores the "Last Modified" meta tag (<meta http-equiv="last-modified" content="YYYY-MM-DD">) indicating a page's last modification date. Therefore, it ha...
John Mueller Aug 14, 2017
★★ What's the Maximum Page Size Google Will Actually Crawl?
John Mueller explained that Googlebot's current crawl limit for a web page is 200 MB (the last known limit in 2015 was 10 MB)....
John Mueller Aug 14, 2017
★★ Does Googlebot Send a Referrer When Crawling Your Pages?
John Mueller indicated on Twitter that Googlebot, when crawling a page, does not return a referrer URL, as a user would when browsing on a browser. A Googlebot visit is therefore similar to direct tra...
John Mueller Aug 14, 2017
★★ Should You Really Deindex Your Internal Search Results Pages?
John Mueller explained on Twitter why Google requires internal search results pages from a website to be deindexed: they create infinite crawl spaces, are often low-quality pages, and frequently prese...
John Mueller Aug 14, 2017
★★ Should you really adjust your domain's geo-targeting from national to global?
Adjusting your domain's geo-targeting can be beneficial if you are shifting from a strong national focus to a global focus....
John Mueller Aug 11, 2017
★★ Why doesn't Search Console show you all of your queries?
The differences between filtered and total data in Search Console can be attributed to the filtering of queries with very few impressions, primarily for privacy reasons....
John Mueller Aug 11, 2017
★★ Should you really mark deep paginated pages as noindex?
Using noindex on deeper paginated pages in a series may not improve crawl budget, but it is still commonly practiced....
John Mueller Aug 11, 2017
★★★ Does structured markup really affect Google rankings?
Structured markup helps Google better understand the content of a page and can lead to enhanced display in search results, but it is not a direct ranking factor....
John Mueller Aug 11, 2017
★★ Is PageRank still relevant for ranking your new pages?
We use PageRank internally, but it matters less for webmasters today. New pages are evaluated based on the perceived quality of the overall site....
John Mueller Aug 11, 2017
★★ Should you still use rel=prev/next tags for paginated content?
For paginated content, it is advisable to provide clear pagination indicators such as rel=prev/next tags, allowing Google to better understand the relationships between pages....
John Mueller Aug 10, 2017
★★★ Should your mobile structure dictate your choice between www and non-www domains?
Google considers that organization and structural clarity are essential for effective crawling. The mobile representation must account for limited space, but that should not alter the domain strategy ...
John Mueller Aug 10, 2017
★★★ Should you really count words to rank on Google?
Google does not recommend counting the maximum number of words on a page. The file size could technically limit indexing, but it does not significantly affect a page unless a script produces an infini...
John Mueller Aug 10, 2017
🔔

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.