Thanks for the reply. I've seen this feature requested before by others. I think some rely on making network requests to get the favicons, very expensive. If the browser had an api to fetch the favicons by url from the browser it would be very useful. Right now what I do to show something is generate icons seeded by the urls, which is not that great since they're not recognizable as the actual favicons of the sites. Hope mozilla innovates here, FF addons already has stuff that chrome doesn't have, like tab warmup.
