To make a favicon in Debian linux or Ubuntu (in my case):
- Install the package xpm2wico with Synaptic or apt-get.
An Xpm to Windows .ico converter - Using Gimp, Capture and shrink or create/edit a 16×16 graphic.
- Save your image in X PixMap Image (xpm) format.
- Convert from xpm to favicon name and format: "xpm2wico favicon.xpm favicon.ico".
- Copy favicon.ico to convenient place, then add the following to a webpage:
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />