John Gruber, on the reaction to a piece he wrote comparing Safari vs. Chrome on the Mac:
But really, taken as a whole, the response to my piece was about one thing and one thing only: the fact that Safari does not show favicons on tabs and Chrome does. There are a huge number of Daring Fireball readers who use Chrome because it shows favicons on tabs and would switch to Safari if it did.
The reaction was so overwhelming I almost couldn’t believe it.
The gist of it is two-fold: (1) there are some people who strongly prefer to see favicons in tabs even when they don’t have a ton of tabs open, simply because they prefer identifying tabs graphically rather than by the text of the page title; and (2) for people who do have a ton of tabs open, favicons are the only way to identify tabs.
I really can’t say this strongly enough: I think Safari’s lack of favicons in tabs, combined with its corresponding crumminess when displaying a dozen or more tabs in a window, is the single biggest reason why so many Mac users use Chrome.
You can even make an argument that adding favicons to Safari wouldn’t just make Safari better, but would make the entire MacOS system better, because Safari gets dramatically better battery life than Chrome. For MacBook users who spend much or most of their days in a web browser, it can mean the difference of 1-2 hours of battery life. This is actually a common refrain I heard from numerous readers back in May: that they wished they could switch from Chrome to Safari because they know Safari gets better battery life, but won’t because Safari — seemingly inexplicably — doesn’t show favicons in tabs.
Favicons wouldn’t even have to be displayed by default to solve the problem — Apple could just make it a preference setting, and power users would find it. The fact that it’s not even a preference, even though it may well be the single most-common feature request for Safari, seems downright spiteful. And not just mean-to-others spiteful, but cut-off-your-nose-to-spite-your-face spiteful. It might sound silly if you’re not a heavy user of browser tabs, but I am convinced that the lack of favicons is holding back Safari’s market share.