Manual:ImageMagick/Convert

Version: ImageMagick 6.4.4 2010-02-01 Q16 http://www.imagemagick.org

Copyright: Copyright (C) 1999-2008 ImageMagick Studio LLC

Usage: convert [options ...] file [ [options ...] file ...] [options ...] file

Miscellaneous Options:
By default, the image format of `file' is determined by its magic number. To specify a particular image format, precede the filename with an image format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for standard input or output.