Jaconir

Game Sprite Sheet Maker

Pack animation frames and create game-ready sprite sheets for Unity, Godot, and Phaser. Free online tool for game developers.

Free Sprite Sheet Generator Online

Clean atlas packing and frame slicing for Unity, Godot, and Phaser

UnityGodotPhaser

Drop frames, auto-pack them, inspect the atlas, then export engine-ready data.

Advanced controls stay tucked away until you need them.

Drop frames to start

Atlas Stage

Import frames and the atlas appears here automatically.

Drop PNG frames to auto-pack your atlas

Animation-safe grid packing keeps frame cells consistent for engines, while tight mode stays available for atlas optimization.

Frame Strip

Drag cards to organize input. Grid mode preserves stable cell order for animation; tight mode is better for general atlases.

Your imported frames will appear here in order.
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To provide these tools without logins or fees, we use curated sponsorships and minimal push notifications to cover server costs. Thank you for supporting frictionless science!

Quick Start

Import, auto-pack, inspect, export.

Why game devs need a packer: one atlas reduces texture swaps, keeps animation assets organized, and makes engine import/export easier than managing dozens of loose PNGs. Grid mode keeps slices stable for animator workflows, while tight mode is there when you want denser atlases.

Selected Sprite

Click a packed sprite or frame card to inspect it here.
Output & Advanced
Show
Atlas Size
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Occupancy
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Uses fixed cells so row and column slices stay stable in animators.

Engine-Ready Assets

Optimized Packing

Automatically minimizes wasted space using advanced bin-packing algorithms.

Precision Controls

Fine-tune padding, extrusion, and layout for pixel-perfect results.

Multi-Format Export

Export as PNG, JSON, CSS, and engine-specific manifest files.

Workflow

1

Import Frames

Import your character or environment animation frames.

2

Pack Atlas

Use trim-aware packing to generate a high-density game atlas.

3

Engine Metadata

Generate Unity C# or Godot Resource scripts for instant import.

4

Export

Download your engine-ready bundle with zero watermarks.