Images to Atlas review
A free browser tool for packing image sets into atlases with engine-ready metadata.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Images to Atlas combines separate images into one or more PNG texture atlases in a browser. It is aimed at solo creators and small teams making game or web assets who need atlas packing and frame metadata without a paid plan. The free tool offers multiple packing layouts, transparent-margin trimming, and optional duplicate detection. Its browser-based workflow also processes source files in the browser rather than uploading them for conversion, which may suit projects where that distinction matters.
Packing controls cover padding, edge extrusion, scale, and power-of-two sizing, alongside MaxRects, Shelf, Grid, and Polygon layouts. Multiple-sheet packing helps handle large image sets, and the published maximum atlas size is 8192 pixels. For an asset pipeline, metadata can be exported as Generic JSON, Unity, Godot, Phaser, PixiJS, Spine, Starling XML, or CSS. That format range makes the tool relevant to creators working across several of those engines and frameworks, while still keeping its purpose focused on atlases rather than a broader sprite workflow.
The main boundary is animation: Images to Atlas does not support it, and animated GIF inputs are treated as still images. Choose it when the job is packing static images, trimming transparent margins, and exporting metadata in a supported format; choose another tool if animation handling is central to the workflow. The tool is described as free, with support through documentation. Its feature set is oriented toward individual creators and small teams, so buyers seeking animation features or support beyond documentation should look elsewhere.
Images to Atlas pros and cons
- Where it wins
- Offers MaxRects, Shelf, Grid, and Polygon packing layouts.
- Trims transparent margins and can detect duplicates with alias metadata.
- Exports metadata for Unity, Godot, Phaser, PixiJS, Spine, and more.
- Where it doesn't
- Does not provide animation support; animated GIFs are treated as still images.
- Atlas size is capped at 8192 pixels.
- Support is listed through documentation.
Images to Atlas fact sheet, pricing and score →
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