Pack animation frames, icons or tiles into a single sprite sheet. Export a PNG plus JSON frame data for your game engine.
A sprite sheet puts every frame of an animation into one image, so the game loads one file instead of dozens. All frames sit in a regular grid of equal cells, which every engine can slice: Unity's Sprite Editor (Grid by Cell Size), Godot's AnimatedSprite2D, GameMaker, Phaser, Pygame and others.
The JSON uses the common "hash" layout (frames → frame, spriteSourceSize, sourceSize) that Phaser, PixiJS and many other tools can read. It also lists the grid's columns, rows and cell size.
Need to go the other way? The sprite sheet cutter splits a sheet back into frames.
Quick answers about the sprite sheet maker tool.
Left to right, then top to bottom, in the order of the list. Files are sorted by name with numbers sorted naturally (2 before 10). You can also reorder them with the arrows.
No. Each cell is as large as the biggest frame, and smaller frames are aligned inside it. You can also set a fixed cell size.
Most browsers can create sheets up to about 16,000 pixels per side. For very large sets, use more columns or a smaller cell size.
This tool makes regular grids, which are easiest to use for animations. Tightly packed atlases need a dedicated packer.
Everything runs in your browser. Nothing is uploaded.