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- SpriteForge
On the recordRead 9 Oct 202625 facts
SpriteForge
On the record
- Animation features
- The editor includes a timeline with keyframes, easing, curve previews, undo and redo, and two-bone inverse kinematics.github.com · read 9 Oct 2026
- Browser support
- The specification lists desktop support for the latest two versions of Chrome, Firefox, Safari, and Edge, and says mobile/touch editing is unsupported.github.com · read 9 Oct 2026
- Development status
- The repository describes SpriteForge as an early open-source release and says several advanced animation features are still in progress.github.com · read 8 Oct 2026
- Export formats
- Exports include Spine 4.x-style JSON, atlas and PNG files, a standalone runtime.html player, and MP4 previews.github.com · read 9 Oct 2026
- Exports
- SpriteForge exports Spine-style JSON, atlas, and PNG bundles, plus MP4 previews using H.264 via ffmpeg.wasm.github.com · read 8 Oct 2026
- Feature status
- The project describes itself as an early open-source release, and says some advanced animation features remain in progress.github.com · read 9 Oct 2026
- How it works
- Users import images, create a bone rig, keyframe animation, and export a Spine-compatible JSON, atlas, and PNG bundle.github.com · read 9 Oct 2026
- Image and mesh features
- It supports PNG/JPG insertion, TexturePacker-style sprite sheet import, mesh attachments with GPU skinning, and automatic weight recomputation.github.com · read 8 Oct 2026
- Image import
- SpriteForge supports PNG and JPG images and TexturePacker-style sprite sheet import.github.com · read 9 Oct 2026
- Import compatibility
- Spine bundle import is partial and may omit constraints, non-default skins, FFD, events, draw order, and linked meshes, with warnings.github.com · read 9 Oct 2026
- Import limits
- Spine 4.x bundle import is partial and omits constraints, non-default skins, FFD, events, draw order, and linked meshes, with warnings.github.com · read 8 Oct 2026
- Integrations
- The specification says exported Spine JSON can be used with runtimes including Phaser, PixiJS, Unity, Godot, and custom runtimes.github.com · read 9 Oct 2026
- Intended users
- The project is aimed at small teams, game-jam projects, tool hackers, and people seeking a lightweight 2D rigging workflow.github.com · read 9 Oct 2026
- License
- The repository lists an MIT license.github.com · read 9 Oct 2026
- Local operation
- The editor runs in the browser, with no account, server, or upload pipeline; project data and images stay on the user's machine.github.com · read 9 Oct 2026
- Local use
- The project says it runs in a browser tab without an account, server, or upload pipeline, keeping projects and images on the user's machine.github.com · read 8 Oct 2026
- MP4 limitation
- MP4 export uses ffmpeg.wasm, whose large bundle can make the first export slow; GIF export is not supported.github.com · read 9 Oct 2026
- Notable missing features
- Brush-based weight painting, full mesh edge split/merge tools, full FFD workflow, and multi-bone and path inverse kinematics are listed as incomplete.github.com · read 8 Oct 2026
