Simple Tileset Generator

Using a custom tile size that isn't cleanly divisible by your pattern grid means pattern tiles will have anti-aliased (blurry) edges. (It won't have any effect on shape tiles.)

If you're after pixel-perfection, use one of the preset sizes (8, 16, 32, 64, 128, 256) which work nicely with the pattern grid sizes (8, 16, 32).

Using a custom grid size that doesn't divide evenly into your tile size will create anti-aliased (blurry) edges when the pattern is exported.

If you're after pixel-perfection, use the preset options for both tile and grid sizes.