SpritePacker review
A free browser toolkit for sprite atlases, metadata exports, and GIF animation.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
SpritePacker is a browser-based toolkit for 2D game developers who need to pack image frames into sprite atlases and export coordinate metadata. It runs packing, trimming, and export locally in the browser, and the site states that images are not uploaded. Inputs include PNG, JPG, and WebP, with GIF-to-frame conversion and animated GIF export for projects that use frame-based animation.
The workflow covers more than basic packing: MaxRects arranges frames, while trimming removes transparent borders and preserves original offsets. Users can set padding, edge extrusion, export scale, and cell alignment. Output includes PNG atlases and JSON, XML, CSS, SCSS, or metadata files. Animation controls include per-frame timing, onion skinning, looping, and speed adjustment. This makes SpritePacker a practical fit for solo and small teams that want atlas preparation and lightweight animation tools in one browser workflow.
The free plan requires no signup and has no paid tier or daily export quota. Export guidance and presets target Unity, Godot, Phaser, PixiJS, GameMaker, Friday Night Funkin’, and HaxeFlixel, making it relevant across several 2D game ecosystems. Its limits are meaningful for more specialized workflows: it does not support rotation packing or multiple atlases. Choose it for free, local-in-browser packing with metadata and GIF support; consider another tool if rotated frames or multipage atlas output are required.
SpritePacker pros and cons
- Where it wins
- Packs frames with MaxRects and trims transparent borders while preserving offsets
- Exports PNG atlases with JSON, XML, CSS, SCSS, or metadata files
- Converts GIFs to frames and previews or exports animations with frame timing
- Where it doesn't
- Does not support rotation packing
- Does not create multiple atlases
- Browser-based workflow may not suit developers seeking a desktop app
SpritePacker fact sheet, pricing and score →
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