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age, helping SEO specialists make informed strategic decisions based on verified information rather than speculation or outdated assumptions about temporal ranking factors.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
★★★ What causes conflicts between your canonical tags in raw HTML and rendered output?
Conflicts between canonical tags in raw HTML versus rendered HTML can create indexing problems because contradictory information is sent to search engines regarding the canonical URL for the same page...
Google Apr 15, 2021
★★ How does Google process a query in mere milliseconds?
The serving system processes queries in two directions: downward (parsing the request, routing to various indexes) and upward (retrieving results, ranking, assembling). This entire process takes place...
Gary Illyes Apr 13, 2021
★★ Why does Search Console hide your international hreflang pages?
Search Console mainly reports on canonical URLs, making tracking very challenging for international sites using hreflang. Alternative pages may seem missing from reports even though they are properly ...
John Mueller Apr 13, 2021
★★ Should you really implement hreflang for languages with different alphabets?
It is recommended to use hreflang even between pages of completely different languages (German/Chinese, English/Japanese), as Google can identify similar concepts and make result exchanges. For exampl...
Gary Illyes Apr 13, 2021
★★★ Should you really implement hreflang for nearly identical content with just currency differences?
It is useful to implement hreflang between pages with nearly identical content but with regional differences like currencies (euros vs Swiss francs) or prices. Even if Google considers these pages as ...
John Mueller Apr 13, 2021
★★ Should you really implement hreflang between completely different languages?
If you have page versions in completely different languages (German/Chinese), hreflang may represent unnecessary effort if Google has no trouble distinguishing these versions. Hreflang is especially u...
John Mueller Apr 13, 2021
★★ Why does Google display incomplete SERPs when some indexes don’t respond?
Google queries multiple indexes (web, images, videos, news, maps) simultaneously. If some indexes do not respond quickly enough, Google still displays the available web results without waiting for the...
Gary Illyes Apr 13, 2021
★★★ Does Changing Your Publication Date Actually Improve SEO Rankings?
John Mueller indicated in the same webmaster hangout that modifying the publication date in the source code for a page without actually changing its content did not improve the ranking of said page. A...
John Mueller Apr 12, 2021
★★★ Do Different Ads Between AMP and Non-AMP Pages Impact SEO?
John Mueller explained in a webmaster hangout that having the AMP version of a page display more or fewer ads than its "canonical" version (non-AMP HTML page) does not pose any problems in terms of SE...
John Mueller Apr 12, 2021
★★★ Why won't the Page Experience update be instantaneous?
The Page Experience update planned for May 2021 will likely not be optimized for quick updates. Google will have to wait for enough CrUX data to be collected (about 28 days) before updating signals. T...
John Mueller Apr 09, 2021
★★ Do poor comments really drag down the ranking of the entire page?
Google assesses the overall quality of a page. If user-generated content (comments, reviews) diminishes the perceived quality of the page as a whole, it will impact its ranking. It's not about the sou...
John Mueller Apr 09, 2021
★★ Is it true that we should abandon domain sharding for HTTP/2 crawling?
Google is gradually rolling out HTTP/2 crawling to a small percentage of sites (10-20%). The main advantage is multiplexing over a single connection. Domain sharding is no longer necessary with HTTP/2...
Martin Splitt Apr 09, 2021
★★★ Does the noindex tag really block the crawling of your pages?
The X-Robots-Tag with noindex prevents indexing but not crawling. Google must first crawl the page to see the noindex. Initially, Google will crawl these pages heavily before its systems learn that th...
John Mueller Apr 09, 2021
★★★ Should you still rely on Google Cache to verify JavaScript rendering?
Google's cache is an old, unmaintained feature. The version displayed is random: it may be from a previous crawl, before or after JavaScript rendering. Do not use the text cache to check if JavaScript...
Martin Splitt Apr 09, 2021
★★★ Does Google really render EVERY page using JavaScript before indexing?
Google renders every page and indexes based on the rendered version, except for very rare exceptional cases. All pages go through the JavaScript rendering process....
Martin Splitt Apr 09, 2021
★★ Does AMP really ensure good Core Web Vitals?
Even though AMP makes it easier to create fast pages, it is entirely possible for an AMP page to fail Core Web Vitals tests. AMP is not an automatic guarantee of success against performance criteria....
John Mueller Apr 09, 2021
★★ Should you really create separate XML sitemaps by country for multilingual content?
For international content, it is not necessary to create separate XML sitemaps by country. Hreflang annotations can be in the sitemap or in the pages. Google does not differentiate the source of hrefl...
John Mueller Apr 09, 2021
★★★ Does robots.txt really prevent the indexing of your pages?
The robots.txt file prevents crawling but not necessarily indexing. Google can index URLs blocked by robots.txt without their content. These pages may appear in site: queries without a snippet, but us...
John Mueller Apr 09, 2021
★★★ Does a rendering error prevent an entire domain from being indexed?
A page with a rendering error does not block other pages within the same domain. There are different queues with different priorities. Pages with errors are simply retried without holding back other p...
Martin Splitt Apr 09, 2021
★★★ Do Core Web Vitals really only serve to separate tie results?
Core Web Vitals primarily serve as a tiebreaker signal when multiple results are considered equivalent in relevance. Google can then favor the page that meets the Core Web Vitals thresholds. This is n...
John Mueller Apr 09, 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.