OpenToonz
A free 2D animation suite with production roots at Studio Ghibli.
OpenToonz is an open-source desktop application for 2D animation production, based on the Toonz software that was adapted for Studio Ghibli workflows. It supports a traditional animation pipeline from scanned drawings and digital paint through timing sheets, compositing, and effects, while also allowing source-code modification and plugin effect development.
Why it stands out
- Built from Toonz, a production tool with a documented history in Studio Ghibli finishing, color, and compositing workflows.
- Free for both commercial and non-commercial use, with source code released for modification.
- Includes GTS, a specialized scanner workflow tool designed around numbered animation drawings.
- Offers an effects SDK intended to connect animation production with image-processing research.
- Handles traditional paper-to-digital workflows rather than focusing only on screen-drawn animation.
Good to know
- GTS is provided only for Windows.
- The recommended environment is desktop-focused: Windows 64-bit or macOS, with specific display, memory, and storage requirements.
- Scanner-based workflows require a TWAIN-compatible scanner; the page specifically recommends an Epson DS-50000 for GTS.
Under the radar: If you are testing a paper-animation workflow, download the sample data and the pencil-test operation ZIP alongside the main installer; they are separate from the application download but useful for evaluating setup before committing a full production pipeline.
Photos
2D animation studios, schools, and independent animators can build a no-cost production workflow for hand-drawn or hybrid digital animation. Scan paper drawings and organize them for paint, timing, and compositing. Create animation using both raster and vector drawing formats. Experiment with custom image-processing effects through the OpenToonz plugin SDK. Use sample data and manuals to evaluate whether it fits an existing animation pipeline.
Desktop 2D animation software; GTS scanning tool for production scanning workflows; digital painting with palette data separate from artwork; xsheet-style timing interface; node-based effect compositing; raster and vector drawing support; conversion between numbered color binary TGA sequences and OpenToonz formats; plugin effects and an effect development SDK; manuals, sample data, community forums, and GitHub source repository.
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