Do the tiles reassemble exactly?

Yes — tiles partition the source exactly, remainder pixels included, so edge-to-edge they reproduce the original pixel for pixel.

What's it useful for?

Instagram grid posts, puzzle pieces, sprite sheets, or printing a large image across pages.

No — slicing happens on your device, and the tiles zip locally too.

Slice one image into an exact grid of tiles — Instagram grids, puzzles, sprite sheets — reassembling pixel-perfect, zipped for download.