Atlas Packer
Atlas Packer: A free atlas packer with practical trimming, preview, and common engine exports. Ranked #3 of 34 in Sprite Sheet Maker Software by our editors (8.1/10); pricing: Free plan; best for free atlas packing with common engine exports.
At a glance
- Editor score8.1 / 10
- PricingFree plan
- Best forFree atlas packing with common engine exports
- Free planYes
- Paid fromFree
- Sprite trimmingYes
- Facts checked14 Nov 2026
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.
Our verdict on Atlas Packer
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.
Your product? Our editors can test Atlas Packer in depth and publish a review, labelled as paid · from $149/mo →
Atlas Packer pricing
Atlas Packer fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Sprite trimming | Yes |
| Rotation packing | Not verified |
| Multiple atlas output | Not verified |
| Animation support | Yes |
| Metadata export | Yes |
| Maximum atlas size | Not verified |
| Deployment | Cloud, Desktop |
| Platforms | Web, Windows |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 4 integrations: Unity, Godot, Phaser, PixiJS |
| Pricing | Free plan |
| Website | antahonist.itch.io |
| Facts checked | 14 Nov 2026 |
Atlas Packer integrations
Atlas Packer lists 4 integrations on its own site.
- Unity
- Godot
- Phaser
- PixiJS
Alternatives to Atlas Packer
- AsepriteA focused desktop editor for pixel animation, tilemaps, and sprite-sheet export.9.3
- LibreSpriteA free, open-source pixel-art editor with animation and sprite-sheet export.8.4
- Sheet Packer (formerly Atlasmith)An affordable browser atlas packer with offline processing and multi-page Pro exports.8.0
See all Atlas Packer alternatives →
Atlas Packer vs the competition
- Atlas Packer vs Aseprite
- Atlas Packer vs LibreSprite
- Atlas Packer vs Sheet Packer (formerly Atlasmith)
- Atlas Packer vs Sheet Packer Pro
- Atlas Packer vs SpriteBat
- Atlas Packer vs Restrike
Compare Atlas Packer with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
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