SpineViewer
A WYSIWYG Spine file viewer & exporter.
Features
- Supports multiple Spine file versions
- Drag & drop or copy/paste to open files in batch
- List-based skeleton view with render layer management
- Multi-select list to batch-adjust skeleton parameters
- Multi-track animation support
- Skin / custom slot attachment configuration
- Debug rendering mode
- Fullscreen preview
- Export to single-frame image, animated GIF/WebP/AVIF, video formats
- Batch export at multiple resolutions
- Custom FFmpeg export parameters
- …and more
Spine Version Support
| Version | View & Export | Format Conversion | Version Conversion |
|---|---|---|---|
2.1.x |
✅ | ||
3.6.x |
✅ | ||
3.7.x |
✅ | ||
3.8.x |
✅ | ✅ | |
4.0.x |
✅ | ||
4.1.x |
✅ | ||
4.2.x |
✅ | ✅ | |
4.3.x |
More versions coming soon 🚀🚀🚀
Supported Export Formats
| Export Format | Use Case |
|---|---|
| Single Frame | Generate high‑resolution still images; pick any frame manually. |
| Frame Sequence (PNG) | Lossless PNG sequences with alpha channel preserved. |
| GIF / WebP / AVIF | Perfect for quick animated previews. |
| MP4 | The most widely compatible video format. |
| WebM | Browser‑friendly streaming with optional transparency. |
| MKV / MOV | For those who like to tinker. |
| Custom FFmpeg Command | Use any FFmpeg arguments for complex, tailored export workflows. |
Installation
- Go to the Releases page and download the ZIP.
- Make sure you have the .NET Desktop Runtime 8.0.x installed.
- Alternatively, download the
SelfContainedZIP, which runs standalone without any .NET prerequisites. - To export GIF or other video formats, install the
ffmpegCLI and add it to your PATH.- Windows builds: see the FFmpeg download page
- Direct download: ffmpeg-release-full.7z
Usage
Importing Skeletons
You can import Spine skeletons in three ways:
- Drag & drop or paste skeleton files or folders onto the model list.
- Use File > Open to batch‑open multiple skeleton files.
- Use File > Open Single Model to open one at a time.
Adjusting Content
- Right‑click menu and keyboard shortcuts are available in the model list. You can multi‑select to adjust parameters in batch.
- In the preview pane, you can also use mouse controls:
- Left‑click & drag to move a model; hold Ctrl to multi‑select (synced with the list).
- Right‑click & drag to pan the entire scene.
- Mouse wheel to zoom; hold Ctrl to zoom all selected models proportionally.
- “Render Selected Only” mode shows only the selected models in preview; use the list to change selection.
Below the preview, playback controls let you scrub through the timeline like a basic player.
Exporting Content
Exports follow the “what you see is what you get” principle—your real‑time preview is exactly what gets exported.
Key export options:
- Render Selected Only: includes only the selected models in both preview and export.
- Output Folder: if unspecified, exports go into each model’s source folder; otherwise, everything exports to the chosen folder.
- Export Single: by default, each model is exported separately; enable this to render all selected models together into a single output.
- Auto Resolution: ignores preview resolution and viewport size—exports at the content’s actual bounds; for animations, matches the full animation area.
More
Detailed usage and advanced tips are in the Wiki.
Encounter a bug or have a feature request? Open an Issue.
Acknowledgements
If you find this project useful, please give it a ⭐ and share it with others!
