I want to announce first version of ctx2png.

Ctx2Png is an addon to the GRX graphics library. It loads/saves a context from/to a PNG file.

PNG is a lost-less compressed graphics format. It have lots of features, like the ability to handle an alpha channel. You can read more about the PNG format in http://www.libpng.org/pub/png/libpng.html

The routines are not very efficient, but they work.

Download:

http://www.terra.es/personal/malfer/zipfiles/ctx2png.zip