📦 Smart Sprite Sheet Packer
Pack multiple PNGs into optimized sprite sheets with engine-ready JSON for Unity, Cocos, and Godot.
How to use
- Upload PNG assets (multi-select to append), or import slices from the AI Sprite Cutter
- Manage items in the asset list (rename, remove); the atlas preview regenerates automatically after upload
- Adjust atlas size, padding, and export engine (Unity / Cocos Creator / Godot)
- Review the sprite atlas preview and layout diagnostics to confirm packing quality
- Click Export engine ZIP to download sprite.png and the matching engine JSON config
- If the atlas is too small, an alert appears—try a larger atlas size
- Pair with the sprite cutter to skip re-uploading slices
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Smart Sprite Sheet Packer — overview
Smart Sprite Sheet Packer arranges PNGs into atlases with Unity, Cocos, and Godot JSON—a lightweight online option for indie 2D teams.
Why AI helps
Manual packing wastes atlas space. Smart layout maximizes sheet usage and outputs structured data for common engine import flows.
Use cases
- • Character animation sheets
- • UI atlas batches
- • Import from sprite cutter
- • Jam-ready exports
How to improve asset efficiency
- • Default 2048 atlas fits most 2D games
- • Set padding to avoid bleeding
- • Pick engine JSON upfront
- • Chain with AI sprite cutter
Supported formats
PNG atlasUnity JSONCocos JSONGodot JSONZIP bundle
Recommended workflow
- 1 Finish AI cutting or gather PNGs
- 2 Upload to packer and pick engine
- 3 Preview layout and frame names
- 4 Import atlas into engine
How to use
- 1 Upload PNGs or import slices
- 2 Set atlas size and padding
- 3 Choose engine JSON format
- 4 Download ZIP with PNG + JSON
FAQ
TexturePacker is a common desktop sprite packing tool. We offer a lightweight online packing option with auto layout and Unity/Cocos/Godot export—good for small projects and fast iteration.