View Image File Metadata From the Command Line Did you know you can access all the information store in a JPG/PNG/GIF file from the command line? Install the ImageMagick package and do this: identify -verbose image_file.jpg The output will be something llike this: arulalan@arul-desktop:~/ Desktop$ identify -verbose thasu.jpg Image: thasu.jpg Format: JPEG (Joint Photographic Experts Group JFIF format) Class: DirectClass Geometry: 800x600+0+0 Resolution: 72x72 Print size: 11.1111x8.33333 Units: Undefined Type: TrueColor Endianess: Undefined Colorspace: RGB Depth: 8-bit Channel depth: red: 8-bit green: 8-bit blue: 8-bit Channel statistics: red: min: 0 (0) max: 255 (1) mean: 40.7125 (0.159657) standard deviation: 73.2441 (0.287232) kurtosis: 0.609629 skewness: 1.53781 green: min: 0 (0) max: 255 (1) mean: 52.529 (0.205996) standard deviation: 91.3897 (0.358391) kurtosis: 0.455854 skewness: 1.48962 blue: min: 0 (0) max: 255 (1) mean: 51.1838 (0.200721) standard deviation: 89.757 (0.351988) kurtosis: 0.527622 skewness: 1.51096 Image statistics: Overall: min: 0 (0) max: 255 (1) mean: 36.1063 (0.141593) standard deviation: 76.8034 (0.30119) kurtosis: 2.40766 skewness: 2.01127 Rendering intent: Undefined Interlace: None Background color: white Border color: rgb(223,223,223) Matte color: grey74 Transparent color: black Compose: Over Page geometry: 800x600+0+0 Dispose: Undefined Iterations: 0 Compression: JPEG Orientation: Undefined Properties: date:create: 2010-07-11T19:50:46+05:00 date:modify: 2010-05-20T09:39:56+05:00 jpeg:colorspace: 2 jpeg:sampling-factor: 2x2,1x1,1x1 signature: e794b1f09975d276aed3b92e5d45511e3e08ced69b1f8f1151eab18556679bda Artifacts: verbose: true Tainted: False Filesize: 97.8KiB Number pixels: 469KiB Pixels per second: 7.629MiB User time: 0.030u Elapsed time: 0:01.060 Version: ImageMagick 6.5.7-8 2009-11-26 Q16 http://www.imagemagick.org You can use this to extract specific fields from image files and make scripts that sort your images according to quality, background color or image size. -- Regards, Tha.Suresh Kanchi Linux User Group Rocks !!!! http://kanchilug.wordpress.com My experiences with Linux are here, http://thasulinux.wordpress.com