About Sprite Tools
Your game art never leaves your device.
Built for game animation
Drop a walk cycle as numbered PNGs, or drop a GIF. We pack a uniform strip or grid so each frame occupies the same cell — that is what Phaser, Unity, and Godot expect so the character does not hop between frames. Filename prefixes (walk_, idle_) become animation clips you can preview at FPS. Mixed-size frames can use the packed-atlas layout with TexturePacker JSON.
No upload
Decoding, trim, packing, and JSON export all run in this tab. There is no backend and no /api. The only files that exist after you leave are the ones you chose to download. Game art never goes to SW Commercial.
Backgrounds
This packer packs pixels you already have. For photos that still have a studio backdrop, cut them out first with Cutout, then drop the transparent PNGs here. Sprite Tools does not generate characters or restore missing pixels.