Built this because I kept needing a quick sprite sheet tool while working on side projects and everything either required a download or had a paywall.

It runs fully in the browser, no upload to a server, no login. Supports: - Packer mode: upload separate frame PNGs, reorder them, export as atlas + JSON - Slicer mode: upload an existing sheet, define rows/columns, split into frames - JSON metadata compatible with Phaser, custom WebGL renderers etc.

Works with Unity and Godot workflows too. Would love feedback on what's missing.