amiga image format

[moondynejo]

hi guys i just have a quick question about image format on the amiga.
what is the standard image format used by the amiga for its background dislay?
you know the ones in the pattern drawer?
any picture converters or any programs that will let you display other formats in the background of WB?

thanks in advance,
                   joe

[moondynejo]

thanks that was just the info i wanted