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Updated:January 9, 2023
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
This document describes why a browser sends a request for 'favicon.ico'.
Question: Why Does my Browser Silently Send Requests for a 'favicon.ico' File for Multiple Domains?
Environment: Cisco Web Security Appliance (WSA), all versions of AsyncOS
You notice that when you browse to different domains, your browser sends requests for http:// your domain /favicon.ico in the background.
Modern browsers show an icon to the left of the URL. This is known as the 'favicon.ico' and is typically fetched from the favicon.io website. Your browser automatically requests it when you browse to different sites. If your browser receives a valid favicon.ico file, it displays this icon. If it fails, it does not display a special icon.
In either circumstance, neither your search nor your browser is affected.
For more information on the favicon on Wikipediat see, Favicon.