Google has provided an important clarification regarding the display of favicons in search results. Contrary to what some webmasters might fear, the disappearance of a favicon is not related to algorithmic core updates.

This clarification is crucial because many SEO practitioners sometimes observe the disappearance of their favicons and interpret it as a signal of demotion or penalty. However, it is actually a purely technical issue, disconnected from the qualitative evaluation of content.

Favicons are part of the results display system and not the ranking algorithm. Their presence or absence depends on specific technical criteria that Google verifies independently.

• The disappearance of a favicon does not indicate a decrease in quality as perceived by Google
• Core updates and favicon display are two distinct systems
• A site can lose its favicon for technical reasons without any impact on its ranking
• Favicon display follows its own validation and compliance rules

This statement is perfectly consistent with what we observe in the field. Favicons often disappear for simple technical reasons: incorrect format, unsuitable size, cache problems, or non-compliance with Google's guidelines on favicons.

However, this information needs to be nuanced. Even if the disappearance of a favicon is not a direct ranking signal, it can indirectly affect SEO performance. A result without a favicon is less visible, can reduce the click-through rate (CTR), and therefore potentially impact positioning in the medium term.

• Verify that your favicon meets Google's specifications (ICO, SVG or PNG format, square ratio, minimum size 48x48px)
• Check that the favicon file is accessible and not blocked by robots.txt
• Validate the tag in the of your pages
• Test your favicon with Google Search Console's rich results testing tool
• Don't panic if your favicon disappears during a core update: these are two separate issues
• Monitor your CTR in Search Console: a missing favicon can reduce your clicks
• Quickly fix any technical favicon issues to maintain optimal visual presence
• Document the date of disappearance and reappearance to identify potential patterns

The technical optimization of a site, including proper favicon management and monitoring of the numerous display parameters in SERPs, represents meticulous and continuous work. Given the multiplication of technical signals to monitor and the increasing complexity of Google's requirements, working with a specialized SEO agency provides access to expert knowledge and personalized support to ensure optimal presence in search results.