Texture Atlas Packer

Bin-packs an arbitrary set of PNGs into a single power-of-two atlas image and emits a JSON manifest with x/y/width/height for each frame — the format Unity, Phaser, and PixiJS read natively.

1. Select multiple PNG files (different sizes OK). 2. Set Padding (1-4 px is normal). 3. Click Pack — download the atlas PNG + atlas.json.

Bigger atlases mean fewer draw calls in your engine. Aim for one atlas per scene rather than per character.

Find it on the Tools page under its category. Every tool runs in your browser — no upload limits, no credits charged.