I have a jpeg image with embedded profile ClayRGB1998 from argyllcms 1.6.3. When I type $ tiffgamut -v myimage.jpg this is what I get: There are 1 raster files to process Gamut output files is 'myimage.gam' tiffgamut: Error - No profile provided and JPEG colorspace 'RGB' isn't Lab ! What does that mean? When I open the image in gimp 2.8, it says it has an embedded profile so I think it really has. Also exiftool reports: Profile CMM Type : argl Profile Version : 2.2.0 Profile Class : Display Device Profile Profile Connection Space : XYZ Profile Date Time : 2014:01:06 22:15:58 Profile File Signature : acsp Profile Creator : argl Profile ID : 0 Profile Description : Interchangeable with Adobe RGB (1998) Profile Copyright : Public Domain. No Warranty, Use at own risk. which seems to confirm that statement. What happens then? Frédéric