Sprite sheet and atlas packer

Drop your sprites and get a tightly packed texture atlas with Phaser, PixiJS, Unity and CSS metadata. Transparent borders are trimmed, identical sprites are merged, edges are extruded to stop texture bleeding, and numbered frames are grouped into animations you can preview. Everything runs in your browser.

Drop sprite images herePNG, WebP, JPEG or GIF, as many as you like

0 sprites

A faster path from art folder to engine

Texture atlases cut draw calls and keep sprite rendering fast on every device. This packer uses a MaxRects layout, so mixed sprite sizes fill the page with little waste. Turn on trimming to drop empty pixels, extrusion to protect edges from filtering, and rotation when you want the tightest result.

What you get

One or more atlas PNG pages at up to 8192 px.
Metadata for Phaser, PixiJS, Unity or plain CSS, with trim offsets and original sizes preserved.
An animations file generated from numbered frame names.
A duplicate report, since identical sprites share one slot.

Check texture edges with the Texture Seam Checker, create concept sheets with the Character Reference Sheet, and prepare 3D characters with the VRM Validator.

Frequently asked questions

Are my images uploaded?

No. Packing and export happen in your browser.

What is free?

Packing and previews are always free, and so is exporting up to 16 sprites on one page. A 30 minute pass unlocks unlimited sprites, larger pages and every format.