Uncompressed Graphic Format

[olegil]

ILBM? (IFF interleaved bitmap)

TIFF? (tag image file format)

PPM? (Portable Pixel Map) (search for ppm and netpbm)

That being said, I don't think you can get much simpler than uncompressed IFF if you're programming for Amiga. If you're talking Linux, I would suggest PPM, since there's a ####LOAD of applications that support this out of the box, and the format is totally open.
If we're talking Windows, I might be persuaded to suggest TIFF. It's well supported under AmigaOS and Linux as well, so really isn't that bad. I don't know how good the documentation is, though. There's some libraries you can use...

[olegil]

Here's the good old RTFM response :-)
uncompressed ilbm doc

ppm docs

libtiff docs


Good luck. And if you choose uncompressed BMP instead of these 3 choices, I'll kill ya. Ok, so I won't kill you, but I'll get pretty mad at ya :-)

[olegil]

@Karlos:

Well, if you're on the Amiga IFF is _kind_ of standard, so it makes sense to use that. Then the user could use the pictures in ANY other program. I like netpbm, though.

[olegil]

Yep. PPM is dead simple. But so is IFF. You need to add a header in both cases.