I was trying to add a favicon to a website earlier and looked for a better way to implement this than to dump a favicon.ico file in the root of the website.
I found this nice little guide: How to Add a Favicon. However, the preferred method did not work in IE (7) and the second method is the old fashioned way (which I resigned myself to use).
Is there a third method that works across all the most popular browsers?
This is what I always use:
<link rel="icon" href="favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
The second one is for IE. The first one is for other browsers.
You can use HTML to specify the favicon, but that will only work on pages that have this HTML. A better way to do this is by adding the following to your httpd.conf (Apache):
AddType image/x-icon .ico
I think the most reliable method is the simply added the favicon.ico file to the root of your website.
I don't think there is any need for a meta tag unless you want to manually override the default favicon, but I was unable to find any research to support my argument.
This is how they're doing it right here on Stack Overflow:
<link rel="shortcut icon" href="/favicon.ico" />
Well, the file is in the root so it does not show whether the tag works or if the browser just got the icon from the usual location (the root).
Edit: I'll try it and see if it works.
Edit 2: Using both tags make it work even for any file name as long as the file is an icon for IE7: I tried using .png files and it only worked with Firefox.
来源：https://stackoverflow.com/questions/6642/preferred-way-to-use-favicons