💡 Convert CSM to JSON: Character Studio File to CityJSON Model Converter

How to Convert CSM to JSON?

From start to finish, our step-by-step guide makes CSM to JSON conversion simple, precise, and hassle-free with our robust tool:

  1. 📥 Download and Install

    Download and install Autoconverter on your system. This application will let you to convert your CSM files to JSON format - no additional CAD software required.

  2. 📂 Open Your CSM File

    Go to File > Open to load your CSM file (*.csm), or drag and drop it directly into the application window. The model loads into the 3D viewport for inspection before converting.

  3. 💾 Save As JSON Format

    Go to File > Save As, select JSON (*.json, *.cityjson) as the output format, choose your destination folder and filename, then click Save to complete the CSM to JSON conversion.

CSM Character Studio CSM File Format

The CSM file format was developed for Autodesk's Character Studio, an advanced animation toolkit integrated with 3ds Max. CSM files store complete skeletal animation data including bone structures, biped rigs, skin weights, and motion capture sequences. While now considered legacy, CSM files remain important for animators working with classic 3D character rigs and motion workflows from the 1995-2010 era.

Key Features of CSM Files

  • Motion Capture Support: Stores raw mocap data, animation keyframes, and movement sequences.
  • Facial Animation: Includes support for morph targets and complex facial rigging systems.
  • Skeletal Rig Preservation: Maintains biped hierarchies, inverse kinematics, and character bones.
  • Legacy Integration: Native to Autodesk 3ds Max and Character Studio pipelines (pre-FBX era).

CSM File Conversion Tools

Convert legacy CSM animation files into modern formats like FBX, GLB, OBJ, STL, DAE, and SKP using Autoconverter and Automesher Application. Our tools utilize the Open Asset Import Library to accurately read Character Studio data and export animated characters with bones, motion, and mesh data intact. Perfect for reviving archived mocap animations or transitioning old 3ds Max rigs to current 3D workflows.

JSON 3D City Model (CityJSON) File

The CityJSON file format is a modern, JSON-based (JavaScript Object Notation) standard designed for storing and exchanging 3D city models. It efficiently encodes buildings, roads, bridges, urban furniture, and other city objects, offering strong support for textures, semantics, and detailed metadata. CityJSON is a lightweight alternative to CityGML, optimized for simplicity, web integration, and high-performance applications.

Key Features of CityJSON Files

  • JSON Simplicity: CityJSON files are lightweight, human-readable, and easily parsed by common programming languages, avoiding the complexity of XML structures like in CityGML.
  • Semantic Data: Preserves rich metadata, including building heights, roof shapes, material classifications, and road types, enhancing 3D GIS and urban analysis.
  • LOD (Level of Detail) Support: Manages multiple levels of detail (LOD1 through LOD4) to suit diverse visualization, simulation, and analysis needs.
  • Web-Friendly Format: Perfect for 3D web visualization and integration with JavaScript libraries like Cesium and Three.js.
  • Open and Extensible: Developed by the 3D Geoinformation Group (Delft University of Technology), CityJSON is an open standard that promotes interoperability and innovation.
  • File Extension Note: Both CityJSON and GeoJSON use the .json extension - ensure you verify the file structure before processing to avoid errors.

CityJSON File Conversion Made Easy

With Autoconverter and Automesher Application, you can seamlessly import, export, and convert CityJSON files into formats like STL, OBJ, SKP (SketchUp), and 3DS. Our tools preserve geometric precision and semantic information, making it easy to integrate 3D city models into your CAD, GIS, and 3D visualization workflows.

Streamline Your 3D City Modeling Today

Optimize your urban planning, GIS projects, and 3D web applications with powerful CityJSON file conversion. Try Autoconverter and Automesher Application now and unlock the full potential of CityJSON in your workflows!

CSM vs JSON - Comparison

Use the comparison below to understand how CSM vs JSON perform in 3D modeling, CAD, and GIS environments.

Feature CSM JSON
Extensions .csm .json, .cityjson
Name Character Studio Motion CityJSON
Textures ❌ ✅
Colors ✅ ✅
Geometry Components ❌ ✅
User Attributes ❌ ✅
Quads ❌ ✅
Importers
Exporters 🚫

More CSM and JSON Conversion Guides

Finding CSM to JSON conversion more complex than expected? Our expert guides below simplify every step of CSM files conversion:

👉 Ready to simplify your CSM and JSON format workflow? Our CSM to JSON converter delivers fast, precise conversion - start now and see the difference.