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gifrsize
A program to resize image size by an integer factor, deleting bits when scaling
down and duplicating bits when scaling up.
Usage:
gifrsize [-q] [-S X Y] [-s Scale] [-x XScale] [-y YScale] [-h] gif-file
If no gif-file is given, GifRSize will try to read a GIF file from stdin.
Memory required:
Line.
Options:
-  [-q]
-  Quiet mode.  Defaults off on MSDOS, on under UNIX.  Controls printout
   of running scan lines.  Use -q- to invert.
 
-  [-S X Y]
-  specifies the exact screen dimension of the output GIF.
 
-  [-s Scale]
-  Set scaling factor for both x & y direction to Scale.
   Default is 0.5. Note this is a floating point number.
 
-  [-x XScale]
-  Set scaling factor for x direction to Scale.  Default is 0.5.
   Note: this is a floating point number.
 
-  [-y YScale]
-  Set scaling factor for y direction to Scale. Default is 0.5.
   Note: this is a floating point number.
 
-  [-h]
-  Print one line of command line help, similar to Usage above.
 
Author:
Gershon Elber
Eric S. Raymond <esr@snark.thyrsus.com>