I have a 1024x1024 png i want to split it into 64x64 (256 equal parts)
i found a program that can do this but it's not free it's called "Split and Tile"
i would like to find out a free way to do this.
ImageMagick could do that for you with a simple one-liner:
convert -crop 64x64 source.png tile%d.png