Nice little tool that can save some time, donation was worth it :)

Would like to suggest the following, based on my experience they are useful due to some not-that-standard-size spritesheets:

- Option to create grid per cell size (to be set manually by the user) instead of row/columns

- Option to adjust grid offset and padding

- When slicing, do not include any blank (empty) frames/images.

See below some spritesheets that need above options to be sliced properly:

Keep up the good work!

Example of how these should be sliced (using Unity's slicer):

Many thanks, appreciated! Will give it a shot and let you know.