On Jan 17, 2020, at 9:36 PM, Laurence Marks <marks@bellsouth.net> wrote:

A favicon is a 16x16 pixel icon, sometimes packed with a 32x32 pixel icon (and rarely a 48x48 pixel or larger icon) into a file customarily named favicon.ico. Browsers display this icon on tabs open to their website. See the date-on-shield on a Google Calendar tab, or the rainbow-colored suitcase on eBay's tab.

There are dozens of online free favicon generators that pack the multiple images into an appropriate file, easily enough for a novice to use.

Has any thought been given to accommodating user-provided favicons?

Do we really trust or want these...


"Due to the need to always check for it in a fixed location, the favicon can lead to artificially slow page-load time and unnecessary 404 entries in the server log if it is nonexistent.[6]

The W3C did not standardize the rel-attribute, so there are other keywords such as shortcut icon that are also accepted by the user agent.

Favicons are often manipulated as part of phishing or eavesdropping attacks against HTTPS webpages."
https://en.wikipedia.org/wiki/Favicon#Limitations_and_criticism