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Sprite Sheet Packer

Pack multiple images into a single optimized sprite sheet — runs entirely in your browser

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Drop images here or click to browse
PNG · JPG · GIF · WebP — multiple files at once

Sprite List (0)

No sprites added yet — upload some images above
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Preview

Pack sprites to see preview

About Sprite Sheet Packer

Sprite Sheet Packer is a free browser-based game development tool that helps indie developers and hobbyists pack multiple images into a single optimized sprite sheet — runs entirely in your browser. Game development involves many specialized tasks, and having the right tools accessible in your browser saves time and keeps your workflow smooth. No installation or engine-specific plugins required.

How to Use

1
Upload your sprite images Drag multiple images onto the drop zone, or click to open the file browser. All browser-renderable formats are supported.
2
Configure packing options Set padding between sprites, choose a background color, and select a sort order.
3
Pack and download Click "Pack Sprites" to generate the sheet, then download the PNG sprite sheet and JSON coordinates file for use in your game engine.

FAQ

A sprite sheet (or texture atlas) is a single image file that contains multiple smaller images — called sprites. Instead of loading many individual files, a game loads one image and uses coordinates to reference each sprite. This drastically reduces draw calls and improves rendering performance.
Any image format that your browser can render: PNG, JPEG, GIF, WebP, AVIF, and BMP. We recommend PNG for sprites with transparency, as JPEG does not support an alpha channel.
The JSON file contains the coordinates of every sprite on the sheet: filename, x position, y position, width, and height. This data is used by game frameworks (Phaser, PixiJS, Godot, Unity, etc.) to correctly slice and display each sprite from the sheet.
Yes. The JSON format is compatible with most 2D game frameworks. For Phaser 3, you may need to adapt the JSON slightly to match its atlas format. The PNG and coordinate data are the two things every engine needs.
This tool supports all major web image formats including PNG, JPEG/JPG, WebP, GIF, SVG, ICO, BMP, and TIFF. The Canvas API used for processing handles these formats natively in your browser without any plugins or extensions required.