Favicon

Favicon (from “favorite icon“) is an icon displayed in certain places in web browser, when browsing any webpage supporting favicons. It can be displayed before address in URL bar, on browser tab, in favorites list, etc. This is mostly an icon (.ico file) in 16×16 or 32×32 dimensions.

The easiest way for your website to support it, is to put proper file in root folder of your domain or webpage, i.e. http://en.wikipedia.org/favicon.ico.

If you need more fine-grained control over this, then this article should help.

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