GIMP is a free versatile graphics manipulation package. Each task requires a different environment and GIMP allows you to customize the view and behavior the way you like it.GIMP features a great fullscreen mode allowing you to not only preview your artwork but also do editing work while using the most of your screen estate... (
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The program works with the following extensions:
bmp,
gif,
jpg,
ico,
png,
psd,
wmf,
jpeg,
rs,
bw,
g3,
sgi,
xbm,
xpm,
svg,
gbr,
im1,
eps,
gih,
tga,
gpb,
pat,
xcf,
im8,
pbm,
xwd,
pcx,
tub,
dcm,
pgm,
pix,
psp,
pnm,
ppm,
als,
tif,
ras,
rgb,
fit,
cel,
fits,
icon,
im24,
im32,
mask,
tiff,
matte,
alpha,
dicom,
bitmap and
pspimage