In fact WUDSN IDE can be used directly to perform the conversion in the current version 1.6.0.
The question is how you want the end-result to look like (#colors, resolution,...).
Your logo has 640x200 and uses 5237 colors, which is a "bit" beyond the Atari's resolution :-)
I usually use GrafX2 (http://code.google.com/p/grafx2
) to perform all the resizing and color reduction/substitution/pixel fixing.
Then I convert the resulting (normally .png, can be anything) picture using the WUDSN IDE Graphics Editor into whatever binary format (pic/bin/raw...) I need.
Then on the Atari you can use DLIs or kernels to add more colors again.
Edited by JAC!, Wed Apr 4, 2012 5:01 PM.