Hi, i am actually rewriting an old article about kritas brush fileformat. I would like to know if the .kpp is some kind of compressed fileformat. Is there anyway to decompress or decompile it? Or any other source of information telling me more about how the kpp is defined?

It's a PNG file with embedded xml in the text section.

I see that helped me. Just found out that i can read it with imagemagick with

identify -verbose brush.kpp

Cool, thx for the quick answer

Although my question is answered i found something that is a little bit strange. Not sure if it is a bug or by design.

After taking a close look at some of my brushpresets, to see how patterns are saved (base64 encoded?), i realized that patterns are saved to many of my presets, that do not use a pattern. After some further testing it seems that patterns are saved with the brush when the strength setting is enabled even when pattern isn't checked.

For the brush i have tested the resulting filesize with pattern is about 900kb while without pattern it is 13kb. Probably that makes no big difference performance-wise, but i thought mentioning it here can't hurt that much

Hm... I thought I had fixed that for the latest releases, need to check the changelog since when exactly...

boudewijn wrote:Hm... I thought I had fixed that for the latest releases, need to check the changelog since when exactly...

Oh yes - my fault. I only checked it oneway with older presets..., saving new ones doesn't include the pattern.