$ identify -verbose box.jpg 
Image: box.jpg
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Class: DirectClass
  Geometry: 420x300+0+0
  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: 232.745 (0.912724)
      Standard deviation: 68.4182 (0.268307)
    Green:
      Min: 0 (0)
      Max: 255 (1)
      Mean: 224.25 (0.879412)
      Standard deviation: 68.8231 (0.269895)
    Blue:
      Min: 0 (0)
      Max: 255 (1)
      Mean: 193.057 (0.757087)
      Standard deviation: 97.2317 (0.381301)
  Rendering intent: Undefined
  Resolution: 72x72
  Units: PixelsPerInch
  Filesize: 7.17188kb
  Interlace: None
  Background color: white
  Border color: rgb(223,223,223)
  Matte color: grey74
  Transparent color: black
  Page geometry: 420x300+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Bumpmap
  Quality: 85
  Orientation: Undefined
  Comment: Created with The GIMP
  Jpeg:colorspace: 2
  Jpeg:sampling-factor: 2x2,1x1,1x1
  Signature: 6c0d9b00a54a6be5e8d668c46ea0c5c74a458459a2fdcd404ba2fc5ef38894ae
  Profile-exif: 20 bytes
  Tainted: False
  Version: ImageMagick 6.3.5 10/29/07 Q16 http://www.imagemagick.org