A free, browser based spritesheet tool for game devs and artists who want to move fast.
Built, maintained, and written by Dennis Postma· Last updated August 2026
One tool that turns loose PNGs, a frame folder, or a GIF into a packed sheet with a JSON atlas. Free, in the browser, no account.
A weekend utility for a game jam in April 2025, built because packing frames by hand in an image editor kept eating the last hours before submission.
Vue 3, TypeScript, and Tailwind on a canvas. Packing, trimming, and export all run client side, so your art never touches a server.
Maintainer and author
Builds 2D games in Godot and Unity, runs the browser MMORPG Noxious, and has packed enough broken sheets to know where the seams show up. Writes every guide on this site.
No paywalls, no premium tier, no export watermark. The whole tool, at no cost.
Your frames stay in the tab. No server, no account, no analytics on your art.
Export PNG, JSON, GIF, and ZIP, ready to drop straight into Godot, Unity, or Phaser.
Padding, trim, and onion skinning all came from feedback, not a roadmap.
Bug reports, feature requests, and corrections all land in the same inbox: [email protected], or use the contact form. Fixes ship in the changelog.
Ready to make your first sheet?