Split game atlases into clean tiles—fast.

Auto Frame

Click the background once to box many sprites at once—ideal for clear sheets on transparent or solid fills. Skip tiny islands with a min-size filter.

Grid & Freehand

Regular tilesets with margin and spacing, or freehand boxes when the layout is irregular. Trim boxes to opaque content; rename cells; copy or save a single region.

Cleanup for cleaner cuts

Magic Wand clears backgrounds to transparency (expand / contract by 1px). Eraser clears alpha in a small hard brush—enough to unstick seams before export. Not a full pixel paint app.

Export for your pipeline

Batch-export PNG, JPG, or BMP tiles with filename templates you control — or Atlas + JSON with a frame table. UI in English, 简体中文, 日本語, and 한국어. Details in Support.

Works best when sprites are clearly separated. Sticky or complex art: Freehand, Wand, or Eraser—then export.

Why it exists

Open texture communities are full of useful atlases. The hard part is getting sprites out quickly — full image editors are powerful, but heavy if you only need to cut tiles for a game. Atlas Splitter is that lighter step: open a sheet, frame what you need, export on your Mac.