Sheet Packer (formerly Atlasmith)

Freemium#4 of 34 in Sprite Sheet Maker Software

Sheet Packer (formerly Atlasmith): An affordable browser atlas packer with offline processing and multi-page Pro exports. Ranked #4 of 34 in Sprite Sheet Maker Software by our editors (8.0/10); pricing: Free plan; best for indie developers packing multi-page atlases in-browser.

8.0/10Editor score

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Sheet Packer (formerly Atlasmith)8.0 Visit Sheet Packer

At a glance

Editor score
8.0 / 10
Pricing
Free plan
Best for
Indie developers packing multi-page atlases in-browser
Free plan
Yes
Paid from
$14.99 one-time
Sprite trimming
Yes
Facts checked
14 Nov 2026

Where it wins
- Offline browser processing keeps sprites on your machine, according to the vendor.
- Pro adds multi-page atlases and exporters for Phaser 3, PixiJS, Godot 4, and Unity.
- Pro costs $14.99 one-time and includes free lifetime updates.
Where it doesn't
- The free demo is limited to 32 sprites.
- Maximum atlas size is 4096 pixels.
- The tool focuses on packing and export rather than a broader sprite workflow.

Our verdict on Sheet Packer (formerly Atlasmith)

Sheet Packer is a browser-based texture atlas packer for indie game developers, particularly solo and small teams that need to organize PNG sprites for game projects. Its packing workflow uses MaxRects and includes alpha trimming, 90-degree rotation, padding and extrude/bleed controls, and power-of-two sizing. The vendor says processing happens offline in the browser, so sprites stay on the user's machine. It is a focused utility rather than a broader sprite-editing environment.

The free demo handles up to 32 sprites and exports generic JSON and PNG. Pro is a one-time $14.99 purchase; its published features add automatic multi-page atlas output, ZIP downloads, and JSON exporters for Phaser 3, PixiJS, Godot 4, and Unity, alongside generic JSON. Free lifetime updates are included. That makes the paid tier relevant when an engine-specific exporter or multiple atlas pages matter, while the demo offers a way to try the basic packing and export flow before buying.

The main trade-off is scope: Sheet Packer is built around packing and exporting atlases, and its maximum atlas size is 4096 pixels. Teams that need a broader sprite-production workflow or larger atlases should compare alternatives. For smaller projects that need trimming, rotation, and engine-oriented metadata without leaving a browser workflow, the free demo may suffice; choose Pro when ZIP and multi-page output or one of its named engine exporters are needed.

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Sheet Packer (formerly Atlasmith) pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 14 Nov 2026.

See plans on theluckyduck666.itch.io

All 2 Sheet Packer (formerly Atlasmith) plans and prices →

Sheet Packer (formerly Atlasmith) fact sheet

Free plan	Yes
Paid from	$14.99 one-time
Sprite trimming	Yes
Rotation packing	Yes
Multiple atlas output	Yes
Animation support	Not verified
Metadata export	Yes
Maximum atlas size	4096 px
Deployment	Cloud
Platforms	Web
Built for	Solo, Small business (editorial estimate)
Integrations	4 integrations: Phaser 3, PixiJS, Godot 4, Unity
Pricing	Free plan (source)
Website	theluckyduck666.itch.io
Facts checked	14 Nov 2026

Sheet Packer (formerly Atlasmith) integrations

Sheet Packer (formerly Atlasmith) lists 4 integrations on its own site.

Phaser 3
PixiJS
Godot 4
Unity

Alternatives to Sheet Packer (formerly Atlasmith)

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Sheet Packer (formerly Atlasmith) vs the competition

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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Sheet Packer (formerly Atlasmith) for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

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Featured on iTechGuides

Sheet Packer (formerly Atlasmith) is listed in our Sprite Sheet Maker Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

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Last updated 14 Nov 2026 · How we research and update