When reading your image, the format is determined implicitedly typically by the first few bytes of the file. However in some cases, the format cannot be determined. This is true for raw image formats such as RGB, GRAY, or CMYK. Typically you will only need to specify an explicit image format for raw images. Otherwise, do not explicitly choose the image format and it will be determined automatically for you.

These formats behave uniquely

      gradient
      plasma
      xc

in that the filename is a color or color range. For example, if you select the `plasma` format, you might define the filename as

      blue-yellow

Or suppose you want a red canvas that is 512 pixels in width and 480 pixels in height. Set Filename to `red`, Size to `512x480`, and Format to `xc`.

For the pattern format, choose from these patterns (set the filename to one of these names):

      bricks
      checkerboard
      circles
      crosshatch30
      crosshatch45
      crosshatch
      fishscales
      gray0
      gray100
      gray10
      gray15
      gray20
      gray25
      gray30
      gray35
      gray40
      gray45
      gray50
      gray55
      gray5
      gray60
      gray65
      gray70
      gray75
      gray80
      gray85
      gray90
      gray95
      hexagons
      horizontal
      horizontalsaw
      hs_bdiagonal
      hs_cross
      hs_diagcross
      hs_fdiagonal
      hs_horizontal
      hs_vertical
      left30
      left45
      leftshingle
      octagons
      right30
      right45
      rightshingle
      smallfishscales
      verticalbricks
      verticalleftshingle
      vertical
      verticalrightshingle
      verticalsaw

Two additional formats include a granite texture and the netscape color cube:

      granite
      netscape

You might want to convert your image to a differing image format. Just select the appropriate format from the scroll list on the Output tool page and press output. For a complete list of image formats supported by ImaegMagick Studio see this page.