GIFCLRMP(1) GIFLIB Documentation GIFCLRMP(1)

# [NAME](#NAME)

gifclrmp - extract colormaps from GIF images

# [SYNOPSIS](#SYNOPSIS)

**gifclrmp**  
\[-v]  
\[-s]  
\[-l *mapfile*]  
\[-t *trans*]  
\[-g *gamma*]  
\[-i *image*]  
\[-h]  
\[*gif-file*]

# [DESCRIPTION](#DESCRIPTION)

A program to modify GIF image colormaps. Any local colormap in a GIF file can be modified at a time, or the global screen one.

# [OPTIONS](#OPTIONS)

-v

Verbose mode (show progress). Enables printout of running scan lines.

-s

Select the global screen color map.

-l mapfile

Load color map from this file instead of selected color map.

-t trans

Change color index values. The change is made to both the selected color table and the raster bits of the selected image. A translation file is a list of pairs of \`before' and \`after' index values. At present, the \`before' index values must be in ascending order starting from 0.

-g gamma

Apply gamma correction to selected color map.

-i image

Select the color map of the numbered image.

-h

Print one command line help, similar to Usage above.

If no GIF file is given, gifclip will try to read a GIF file from stdin.

# [NOTES](#NOTES)

• The default operation is to dump out the selected color map in text format.

• The file to load/dump is simply one color map entry per line. Each such entry line has four integers: "ColorIndex Red Green Blue", where color index is in ascending order starting from 1.

# [AUTHOR](#AUTHOR)

Gershon Elber.

2 May 2012 GIFLIB

---

Document: gifclrmp(1) from giflib 6.1.3-r2 (Chainguard OS)
Source: https://git.code.sf.net/p/giflib/code