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age, helping SEO specialists make informed strategic decisions based on verified information rather than speculation or outdated assumptions about temporal ranking factors.
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★★★ How Does Google's Machine Learning Really Determine Canonicalization Criteria Weights?
The same John Mueller explained during a webmaster hangout an example of how Google can use machine learning algorithms: "So, for example, we use machine learning for canonicalization. We have all the...
John Mueller Dec 23, 2019
★★★ How Does Google Really Process Your XML Sitemap Files?
John Mueller explained on Reddit that Google processes XML sitemap files like an "energy drink effect": "All XML sitemap files from a site are imported into one large common cup where they are mixed, ...
John Mueller Dec 23, 2019
★★★ Do keywords in URLs really impact your SEO?
Keywords in URLs have an insignificant role for web pages, but they are often used for convenience in content management systems. However, for image files, keywords are helpful. For example, a descrip...
John Mueller Dec 23, 2019
★★★ Can structured data really trigger a penalty for cloaking?
When correctly implemented, structured data helps Google understand the content of web pages. Ensure that structured data accurately reflects the information visible to users to avoid penalties for pe...
Google Dec 17, 2019
★★★ Has nofollow become just a suggestion that Google can ignore at will?
Nofollow attributes are designed to indicate that certain links should not influence rankings in search engines. Google now views nofollows as hints rather than strict directives, and may choose to ig...
Google Dec 17, 2019
★★★ Does BERT really enhance Google's understanding of your content?
Google's BERT algorithm is used to better understand complex queries in search results. This intelligence is specifically applied to natural language understanding in user searches....
Google Dec 17, 2019
★★★ Are expired domains really useless for SEO?
Using an expired domain does not provide any intrinsic SEO benefit. Any perceived advantage likely stems from other factors, such as content quality or natural backlinks. Google assesses the relevance...
Google Dec 17, 2019
★★★ Does page speed really affect Google rankings in 2025?
The loading speed of a web page affects its ranking in search results, particularly on mobile. Very slow pages may see their ranking decrease. However, continuous speed improvement benefits user exper...
Google Dec 17, 2019
★★ Does lazy loading really sabotage the indexing of your images?
Deferred loading of images via lazy loading can affect when Googlebot discovers images for indexing. Make sure that critical images for SEO are not omitted by the lazy loading technique....
Google Dec 17, 2019
★★★ Do Google’s Core Updates really reward 'quality'?
Google's Core Updates aim to improve the assessment of the relevance and quality of pages. Webmasters should focus on creating high-quality, useful content to prepare for the effects of these updates....
Google Dec 17, 2019
★★★ Why does an old URL still show up in Google after a redirect?
When Google follows a redirect, the destination page is deemed valid, and an old URL might still show up in search if explicitly accessed, for example via a site:oldurl.com request....
John Mueller Dec 13, 2019
★★★ Can you really combine multiple structured data schemas on the same page?
It is acceptable to have multiple types of structured data on a page, such as for an e-commerce site and a local business....
John Mueller Dec 13, 2019
★★★ How is machine learning really changing Google's ranking criteria?
Google employs machine learning to adjust certain aspects of its algorithm, such as the weighting of signals for URL canonicalization. This does not make the algorithm completely opaque, as weights an...
John Mueller Dec 13, 2019
★★★ Does Robots.txt really block the crawling of your images across all your domains?
The robots.txt file is specific to each hostname and protocol. Blocking on a main domain does not block crawling of subdomains or different domains. A 503 code in robots.txt can temporarily stop crawl...
John Mueller Dec 13, 2019
★★★ Why does Google overlook invisible video descriptions on mobile?
Metadata, such as a video's description, must be visible on the page or in structured data to be taken into account by Google, particularly for mobile-first SEO....
John Mueller Dec 13, 2019
★★★ Do blog comments really count as main content in Google's eyes?
Blog comments are considered an integral part of a page's main content. They can enrich the page, especially if the initial post is short and the comments are of high quality....
John Mueller Dec 13, 2019
★★★ Does GTM verify your site without accessing your tags?
The Google Tag Manager container ID will be used solely to verify site ownership, without accessing Tag Manager data....
Daniel Waisberg Dec 11, 2019
★★★ How can you verify your site in Google Search Console using just a simple HTML tag?
To verify your website in Google Search Console using an HTML tag, you must have permission to modify the source code of your homepage. Add your site's URL under the URL prefix option, copy the genera...
Google Dec 11, 2019
★★ Why does Google recommend using Analytics or Tag Manager to verify your URL prefix properties?
For properties with a URL prefix, it is generally easier to use verification methods like Google Analytics or Google Tag Manager. This allows you to independently verify specific sections of your site...
Google Dec 11, 2019
★★★ Why can the placement of the Google Tag Manager code block Search Console verification?
Before verification, ensure that the Google Tag Manager tag is present immediately after the opening body tag of the homepage. If there is anything between the two, the verification will fail....
Daniel Waisberg Dec 11, 2019
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