Q: Help! I pasted an image from an image editor, but
transparency isn't working, or all the pixels are shifted!

A: Try a different image editor or a different browser
(some combinations are broken), or drop a file instead.

Q: Help! My colors are all messed up!

A: Color profile data is stripped from PNGs for
technical reasons. Pasting can mess up colors too.

Q: What are these margin offset things?

A: They control where tile corners/edges are sliced.

Q: I'm using RPG Maker, but the preview is wrong!

A: Unlike Godot, RPG Maker can't distinguish between
corners and tips, so tips are made up of corner parts.

Q: Do you have any example inputs?

A: Yes (this is a link).