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age, helping SEO specialists make informed strategic decisions based on verified information rather than speculation or outdated assumptions about temporal ranking factors.
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★★★ Should you block pages based on the referrer or use server authentication?
If you are blocking access to pages based on the referrer, consider noindexing them. For confidential content, server-side authentication is recommended....
John Mueller Jan 12, 2016
★★★ Is rel=canonical really enough to manage A/B testing in SEO?
During A/B testing, if one version of the page is essentially equivalent to the homepage, you can use rel=canonical to direct search engines to the main URL....
John Mueller Jan 12, 2016
★★ Can shared hosting really hurt your SEO?
Google is generally effective at understanding that multiple sites can share hosting. The negative impact arises only if an entire server is predominantly filled with low-quality sites....
John Mueller Jan 12, 2016
★★ Are mobile interstitials really penalized by Google?
Commercial interstitials are not currently banned by Google's quality guidelines, but they are described as bothersome and can impair user experience, particularly on mobile....
John Mueller Jan 12, 2016
★★★ Should you really use rel=canonical on your A/B test pages?
If one version of a page is essentially equivalent to another, use "rel=canonical" to point to the main URL. This applies even if the test page is meant for 10% of traffic for a year....
John Mueller Jan 12, 2016
★★★ Should you use rel=canonical between subdomains and the main domain to manage duplicate content?
Using rel=canonical to link duplicate content from a subdomain to the main domain does not create any added value in SEO. The canonicality indicates that pages should be treated as one....
John Mueller Jan 12, 2016
★★★ Do JavaScript links really pass PageRank like traditional HTML links?
Internal links generated by JavaScript that load into the DOM are treated as normal links by Google and pass PageRank unless specific interactions (like hover) are needed to reveal them....
John Mueller Dec 29, 2015
★★★ Is it true that you lose PageRank when moving your site from HTTP to HTTPS?
When you switch from HTTP to HTTPS, PageRank is not lost in the redirection. We view this as a protocol upgrade rather than a true domain change....
John Mueller Dec 29, 2015
★★★ Does Google really index Flash content seamlessly?
Google can extract content from Flash files and index it with the corresponding page, but having a unique description for these files aids in ranking....
John Mueller Dec 29, 2015
★★★ Is hidden text really ignored by Google for ranking?
Hidden text is generally not considered in Google’s ranking. This text should be visible by default if its content is important to the relevant page....
John Mueller Dec 29, 2015
★★★ Is mobile loading speed really a critical ranking factor?
Page loading speed is essential on mobile, as users quickly leave slow sites. Google's AMP project aims to enhance the speed of mobile sites by using a limited HTML version and a CDN, which could impr...
John Mueller Dec 18, 2015
★★★ Why does Google require unrestricted access to JavaScript and CSS in your robots.txt?
Google needs to see web pages as a user would, which requires access to JavaScript and CSS from the robots.txt file. This allows Google to analyze the actual rendering of mobile pages....
John Mueller Dec 18, 2015
★★★ How should you correctly manage the canonical relationship between AMP and standard pages?
In the AMP setup, main web pages retain their priority for indexing and ranking. AMP pages must include a rel=canonical link to the standard page, allowing Google to show AMP pages in search results w...
John Mueller Dec 18, 2015
★★★ Does the mobile compatibility test truly affect rankings on smartphones?
Google's "Mobile-Friendly Test" allows you to check how pages are perceived by Google's algorithms, analyzing elements such as text size and the compatibility of key page elements on mobile. The resul...
John Mueller Dec 18, 2015
★★★ Should you sacrifice CSS complexity to speed up mobile AMP?
AMP pages must encapsulate styles within the HTML file itself to allow for effective caching. This can be a challenge for sites with extensive stylesheets, but the main goal is to maximize loading spe...
John Mueller Dec 18, 2015
★★★ Is AMP still relevant for boosting your mobile SEO?
The AMP project, backed by Google, aims to accelerate mobile page loading through a limited HTML version and a CDN, which could become a major topic in the future. While particularly suited for publis...
John Mueller Dec 18, 2015
★★★ Is responsive design really THE solution for mobile-first indexing?
Google strongly recommends responsive design for mobile websites because it uses the same URL, which simplifies site structure and makes troubleshooting problems easier. Other methods, like dynamic se...
John Mueller Dec 18, 2015
★★★ Should you really customize product reviews for each listing?
Structured data must be product-specific on the page for the reviews to be relevant. Using the same reviews for all products can be problematic....
John Mueller Dec 15, 2015
★★★ Can duplicate reviews ruin your rich snippets?
For rich snippets, reviews must be relevant to the specific product on the page. General reviews across multiple pages can decrease their value....
John Mueller Dec 15, 2015
★★★ Should you really block content with robots.txt to deindex it?
To remove already indexed pages, it is advisable to use the URL removal tools, especially if you cannot add a noindex directly due to the robots.txt block....
John Mueller Dec 15, 2015
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