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age, helping SEO specialists make informed strategic decisions based on verified information rather than speculation or outdated assumptions about temporal ranking factors.
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★★★ Why can't anyone truly master SEO 100%?
John Mueller stated that SEO is not a matter of belief, that no one knows everything, and that practices are continually evolving. He also claimed that anyone calling themselves an "SEO guru" is, in h...
John Mueller Apr 28, 2026
★★★ Is Google finally revealing how it really analyzes your pages with HTTP Archive?
HTTP Archive is used by Google to analyze how web pages evolve in terms of performance, JavaScript usage, and other essential SEO metrics....
Gary Illyes Apr 23, 2026
★★★ Does Google use custom JavaScript scripts to evaluate your pages?
Google uses custom metric scripts to extract more specific data during website page tests, providing flexibility in the pursuit of information that is otherwise unavailable....
Martin Splitt Apr 23, 2026
★★ Should you offer Markdown versions of your content to enhance your visibility in AI-generated results?
An SEO consultant saw claims circulating that Google Search Central would serve Markdown versions of its blog articles to boost its visibility in AI-generated results. He delved into the topic, inspec...
John Mueller Apr 21, 2026
★★★ Could a domain name similar to a competitor harm your SEO?
A webmaster was concerned about having a domain very close to another (only one letter difference). John Mueller responds that this is generally not an issue for SEO in itself. The only real risk iden...
John Mueller Apr 21, 2026
★★★ Does Markdown Really Work for SEO, or Should You Always Use HTML Instead?
On LinkedIn, someone asked John Mueller whether Google treats .md pages (that is, Markdown) differently from standard HTML pages, and more specifically whether they are properly rendered and accessibl...
John Mueller Apr 14, 2026
★★★ Should you really avoid using unique canonicals on multi-page e-commerce sites?
On LinkedIn, Rowan Collins, SEO Consultant, exchanged with John Mueller on a specific point about e-commerce structured data. For a multi-page site, each product variant with its own URL should not be...
John Mueller Mar 31, 2026
★★ Do structured data markups really bloat your HTML pages?
Adding structured data can significantly increase the weight of an HTML page. Google documents many types of structured data it supports, and their accumulation can easily bloat a page with invisible ...
Martin Splitt Mar 30, 2026
★★ Does site speed really impact your conversion rates?
Google acknowledges that studies show faster websites have better retention and conversion rates. Speed depends partly on page size: the more data to transfer, the longer the loading time....
Martin Splitt Mar 30, 2026
★★ Does network compression really improve your site's crawl budget?
Network-level compression reduces the amount of data transferred, but doesn't decrease the storage space needed on the user's device or crawler side. It only helps accelerate the transfer....
Martin Splitt Mar 30, 2026
★★ Can image optimization really cut your page weight by 90%?
It is recommended to optimize images for the web. An appropriately compressed image is visually identical to the original on screen, but can reduce file size from several megabytes to less than one me...
Martin Splitt Mar 30, 2026
★★★ Why is mobile-desktop parity sabotaging your rankings in Mobile-First Indexing?
When transitioning to Mobile-First Indexing, Google observed that a large number of pages lacked parity between mobile and desktop versions. Content was missing, links were absent, navigation and meta...
Martin Splitt Mar 30, 2026
★★★ Is Google Really Measuring Page Weight the Way You Think It Does?
For Google, page weight (page size) corresponds to the raw bytes transferred by URL, and not the total sum of all downloaded resources. This definition differs from that of users who often consider th...
Martin Splitt Mar 30, 2026
★★ Has mobile page weight really tripled in just one decade?
According to the Web Almanac 2025, the median weight of mobile homepage pages has increased from 845 KB in 2015 to 2.3 MB in July 2025, representing a three-fold multiplication over 11 years....
Gary Illyes Mar 30, 2026
★★★ Does Googlebot really stop crawling after 15 MB per URL?
By default, Googlebot fetches 15 megabytes of raw content per URL, then stops. This limit applies individually to each URL: if an HTML page references external resources, each of those resources also ...
Martin Splitt Mar 30, 2026
★★★ Does optimizing page size actually benefit users more than it benefits your search rankings?
Every size optimization helps not only with search engines but especially with end users. Users definitely prefer responsive websites, and overly heavy pages harm that responsiveness....
Gary Illyes Mar 30, 2026
★★★ Is content disparity between mobile and desktop killing your rankings in mobile-first indexing?
During mobile-first indexing, Google has found that a large number of pages present significant differences between their mobile and desktop versions: missing content, absent links, different navigati...
Martin Splitt Mar 30, 2026
★★ Is lazy loading really essential to optimize your initial page weight and boost Core Web Vitals?
Lazy loading allows you to load only images and heavy content that are actually visible or near the user's viewport, rather than loading everything upfront, thereby reducing the initial weight of the ...
Martin Splitt Mar 30, 2026
★★ Does network compression really optimize user device storage space, or is it just a temporary fix?
Network-level compression helps reduce data transfer time, but it does not solve the storage space problem on the user's device. Once decompressed, data occupies its full size on disk....
Gary Illyes Mar 30, 2026
★★★ Does page weight really affect user experience and SEO performance?
Google acknowledges that page weight remains a problem for user experience, particularly on slow connections. Faster websites have better retention rates and conversion rates according to studies ment...
Martin Splitt Mar 30, 2026
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