About J’s Palette Editor

a GUI for editing and converting colour palettes

The palette editor allows you to edit colour palette files and create source files to use in your programs.
The brightness adjuster can be used to adjust the brightness of the palette entries. It can also change the brightness in specificly red, green, and blue.
The colour contrast adjuster, well, lets you adjust the colour contrast of all the palette entries. You can also grayscale the image by using a really low colour contrast.
The program also converts palette formats to other available formats.
The program is very easy to use.

Palette File Formats

These are text files that store each palette entry on a separate line and separate the red, green, and blue values with single spaces.
Load a Jasc Palette into notepad and you’ll get a good idea of it. Check the spec’s for more detail.

These are binary files that store each palette entry as a 32-bit value.
There is 27 bytes of header before the start of the palette entry data.
There is a dword starting at the 23^rd byte defining the number of palette entries in the file.
The 1^st palette entry starts at the 27^th byte.
Check Microsoft’s spec’s for more details.
This is the format supported by Tile Molester 0.19.

These are binary files that store each palette entry as a 24-bit value. There is no header section. It is strictly red, green, and blue values throughout the files.

It is like the ACT files except each palette entry is stored as a word.
A little accuracy is removed from the red, green and blue values but it is almost invisible.
In binary, this is the format of the bits in each palette entry: ?BBBBBGGGGGRRRRR.
The question mark stands for an unused bit.
This is the format supported by Tile Molester 0.20 and later versions. You will need to rename it to .pal for the program to recognize it.

You can get the colour palette from a bitmap by loading it in. If the bitmap doesn’t have a palette, you will be told.
The palettes can be monochrome, 4-bit(16 colour), 8-bit(256 colour) and it will still be loaded. Any unused palette entries are turned black.
These bitmaps are just normal Windows bitmaps.