spritesheettools.comSprite Sheet Tools

Free Online Sprite Sheet Packer

Drop sprites, tweak padding and sheet size, preview the atlas, then publish PNG + data — all in the browser.

Sprite Sheet Packer

Free browser texture atlas — MaxRects packing, JSON / XML export

Atlas preview100%

Drop sprites here

PNG, JPG, WebP, BMP, or GIF. Packing runs in your browser — files never leave this device.

How to pack a sprite sheet online

  1. Add PNG/JPG/WebP files or an entire folder.
  2. Adjust padding, max size, power-of-two, or rotation.
  3. Review the live atlas preview and utilization.
  4. Publish to download the PNG and JSON or XML data.

FAQ

What is a sprite sheet packer?
A sprite sheet packer (texture atlas packer) combines many images into one texture and writes frame coordinates so game engines can draw each sprite efficiently.
How is this different from GIF to sprite sheet?
GIF to sprite sheet extracts animation frames into a grid. This packer takes separate image files and packs them tightly with MaxRects — similar to desktop atlas tools.
Are my files uploaded to a server?
No. Packing and export run entirely in your browser. Files never leave your device.
Which export formats are supported?
Phase 0 supports PNG plus JSON Hash, JSON Array, and XML TextureAtlas. More engine formats (Unity, Godot, Phaser, etc.) are planned.
Is this free?
Yes. Free to use with no watermark and no registration.