Atlas Packer review
A free atlas packer with practical trimming, preview, and common engine exports.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Atlas Packer combines loose sprite or icon PNGs into an atlas for game developers, especially solo creators and small teams looking for a free packing tool. It runs in a browser and has a Windows version. Its focus is straightforward: arrange frames, adjust how they fit, and export an atlas with metadata or a Godot animation resource.
The packing workflow includes MaxRects, adjustable padding, trimming of empty sprite borders, duplicate-frame merging, optional power-of-two sheet sizing, and edge-pixel extrusion. A live preview changes as frames are added or removed, giving users a view of the current sheet before export. The product is described as working offline, with files not uploaded to a server. Those features suit a focused atlas task; teams seeking a wider game-art pipeline should compare tools with more verified workflow capabilities.
Exports include a PNG atlas and JSON metadata packaged in a ZIP, as well as Godot 4 SpriteFrames output. The listed integrations are Unity, Godot, Phaser, and PixiJS, though the export formats described here are PNG/JSON and Godot SpriteFrames. Atlas Packer is free to use; the Windows download is described as “Name your own price,” rather than a fixed paid plan. Choose it for accessible packing and common engine connections. Consider an alternative if you need broader workflow features or a more explicit paid-plan structure.
Atlas Packer pros and cons
- Where it wins
- MaxRects packing includes padding, trimming, and edge-pixel extrusion.
- Live preview updates as frames are added or removed.
- Exports PNG and JSON in a ZIP, plus Godot 4 SpriteFrames.
- Where it doesn't
- Windows download uses a name-your-own-price model.
- Does not offer as many verified workflow features as some alternatives.
- No fixed paid tier is described.
Atlas Packer fact sheet, pricing and score →
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