This is the command giftrans that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
giftrans - transform gif from gif87 to gif89, making one color transparent
SYNOPSIS
giftrans [options] [-o filename] filename
DESCRIPTION
giftrans converts any GIF file into a GIF89a. Allows for setting the transparent or
background color, changing colors, adding or removing comments. Also code to analyze GIF
contents.
OPTIONS
-h Print short help on stdout.
-t Specify the transparent color
-T Index of the transparent color is the background color index
-B Specify the transparent color's new value
-b Specify the background color
-g Change a color in the global color table
-c Add a comment
-C Remove old comment
-l Only list the color table
-L Verbose output of GIFs contents
-V Verbose output while converting
-o Redirect stdout to a file
-e Redirect stderr to a file
Colors may be specified as index, as rgb.txt entry or in the #rrggbb form. Of course,
beware that shells will often consider the # character to start a comment and so you may
have to escape it!
EXAMPLE
To convert the white background of a gif file to transparent, use
giftrans -t #ffffff file.gif > transparentfile.gif
Use giftrans online using onworks.net services
