This is the command icontopbm that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
icontopbm - convert a Sun icon into a portable bitmap
Reads a Sun icon as input. Produces a portable bitmap as output.
For windows icons (this format is used for "favicon.ico" on web pages) please see
Use icontopbm online using onworks.net services