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.

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Palette File Formats

Jasc PaintShop Palettes (*.pal)

• 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.

Microsoft Palettes (*.pal)

• 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.

Adobe Colour Tables

• 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.

GameBoy Advanced Palettes (*.GBAPal) / aka: Raw Palettes

• 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.

Paletted Bitmaps (*.bmp)

• 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.

Icons (*.ico)

• A complete format specification can be found at http://services.simac.be/vnc/single/icoFormat.html#MICCUR-DMYID.2

NOTE: Description taken from the J’s Palette Editor.html file; some additional information has been added.