Of course i also use bmp if i go tothe shop in my city. Unfortunately that shop is very expensive, and i went there only for one of my prints, that was too big to print online. I use always the internal 3x3 antialias of my fractal program, which don't works on colors but on numerical values. If it is not enough i've written another simple application that means pixel (takes nxn square and create a mean pixel). This is because some of my images get bigger than 1GB and there are memory problems to open such images. It resize one row at a time so it needs less memory. It is written in c, and actually it is not usable without a compiler. I will work on it to produce a command line interface..... stay tuned :-). Don't expect too much, i'm only a programmer hobbist.