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CharacterStudio
What it is
CharacterStudio is a free, browser-based toolkit for creating and optimizing 3D VRM avatars. Users can select preloaded traits, use point-and-click controls and a color picker, or drag in their own models and textures. Imported models must be VRM files, with the guide recommending version 0.0. Texture replacement works by dropping an image into the browser, preferably with UVs matching the base mesh. The studio exports GLB and VRM files and screenshots, and it lists programmable animations. A one-click optimizer can merge skinned meshes and atlas textures; documentation says this may reduce an avatar to one draw call. Batch export can randomize results or follow metadata schemas. Avatars can also be generated from manifest.json files. Rendering uses Three.js and WebGL. The codebase is open source under the MIT license. JSON-based assembly and export is documented for batch creation of Anata VRMs, but that workflow is still a work in progress and not yet general-purpose.
For and against
For
- Free browser-based toolkit
- Exports GLB, VRM, and screenshots
- Includes one-click VRM optimization
- Supports batch export schemas
- Open source under the MIT license
Against
- Imported models must use VRM format
- Guide recommends VRM version 0.0
- JSON assembly is still a work in progress
- Default assets require separate installation
The verdict
CharacterStudio provides browser-based avatar building, optimization, and export with an open-source codebase. Its import requirements and unfinished general JSON workflow matter when planning custom or batch production.
Who it suits
CharacterStudio suits artists and developers creating avatars for open-world games or studying and customizing avatar tools. It runs in a browser and supports custom VRM assets.
On the record
- Animation
- The product lists programmable animations as a feature.m3-org.github.io · read 7 Oct 2026
- Asset format
- The avatar guide says uploaded 3D model files must be in VRM format and recommends version 0.0.m3-org.github.io · read 7 Oct 2026
- Batch export
- Batch export can randomize outputs or follow metadata schemas.m3-org.github.io · read 7 Oct 2026
- Character creation
- Users can select preloaded assets, drag and drop their own 3D models and textures, or generate avatars from a manifest.json file.m3-org.github.io · read 7 Oct 2026
- Custom assets
- Users can choose preloaded assets or drag and drop their own 3D models and textures.m3-org.github.io · read 7 Oct 2026
- Customization
- The studio supports point-and-click character building, mixing preloaded traits, and a color picker.m3-org.github.io · read 7 Oct 2026
- Developer setup
- The quickstart documents cloning the GitHub repository and running the project with npm or Yarn.m3-org.github.io · read 7 Oct 2026
- Exports
- The studio can export creations as GLB and VRM files, plus screenshots.m3-org.github.io · read 7 Oct 2026
- Implementation
- The project documentation describes rendering with Three.js and WebGL and says the core logic is in the CharacterManager class.m3-org.github.io · read 7 Oct 2026
- Import limits
- The avatar guide says imported 3D models must be VRM format and recommends version 0.0; replacement textures work best with UVs matching the base mesh.m3-org.github.io · read 7 Oct 2026
- Intended users
- The makers describe avatar creation as useful for open-world games and position the project as an open alternative for people who want to study, improve, or customize avatar creation tools.m3-org.github.io · read 7 Oct 2026
- Open source
- The project describes its codebase as open source and MIT licensed.github.com · read 7 Oct 2026
- Optimization
- Its drag-and-drop VRM optimizer can merge textures into an atlas and merge skinned meshes to reduce draw calls and avatar file size.m3-org.github.io · read 7 Oct 2026
- Programmatic configuration
- Loading a JSON file to assemble and export VRMs is documented as a work in progress and is currently tailored to batch assembling Anata VRMs.m3-org.github.io · read 7 Oct 2026
- Programmatic setup
- The docs describe JSON-based VRM assembly as tailored to batch assembling Anata VRMs and not yet fully developed for general use.m3-org.github.io · read 7 Oct 2026
- Purpose
- Character Studio is an open 3D studio for making and optimizing VRM avatars and building customized avatar creator apps with your own assets.m3-org.github.io · read 7 Oct 2026
- Setup
- The project can be installed by cloning its repository, installing dependencies, and running the development server; the README says default assets are installed separately with npm run get-assets.github.com · read 7 Oct 2026
- Support
- The docs invite artists and developers to join the M3 Discord community for discussion.m3-org.github.io · read 7 Oct 2026
