MeshySec

Export your Meshy 3D models to GLB, straight from the viewer.

What it does

It adds a blue GLB button to the Meshy model viewer. Open one of your models, click the button, and the model's geometry downloads as a .glb.

The extension reads the model out of the viewer's 3D scene in your browser, so nothing gets uploaded anywhere. It exports geometry only for now — mesh shape, no textures. It's meant for exporting your own models for personal use.

Install on Windows (easiest)

Double-click install.bat. It checks for Node.js (and prints the version it finds), builds the extension, opens Chrome's extensions page and the project folder, and copies the dist folder path to your clipboard. Then, in Chrome: turn on Developer mode (top right), click Load unpacked, and pick the dist folder.

If Node.js isn't installed, the script stops and opens the download page — install Node 18+, then run install.bat again.

Install by hand (any OS)

Build it once:

npm install
npm run build

That creates a dist/ folder. Load it in Chrome:

1. Open chrome://extensions.
2. Turn on Developer mode (top right).
3. Click Load unpacked and choose the dist folder.

Changed or rebuilt something? Click the reload icon on the extension's card in chrome://extensions.

Using it

1. Open a model on meshy.ai/workspace so it's showing in the 3D viewer.
2. Click the blue GLB button in the toolbar at the bottom of the viewer.
3. Pick an option:
   • With textures — embeds the base color, normal, and metallic/roughness maps as a PBR material. Larger file, takes a few seconds.
   • Geometry only — just the mesh shape. Fast and small.
4. The .glb downloads.

The button only appears while a model is open, since that's the only time there's a model to export.

Viewing the file

Drop the .glb into a browser viewer:

• Model Map — loads .glb/.gltf, orbit and zoom, and lets you place labelled pins on parts and export them as JSON.
• glTF Viewer — quick check that the file opens.

Converting to OBJ, FBX, STL, USDZ

A .glb imports almost everywhere. In Blender: File → Import → glTF 2.0, then File → Export to whatever you need. assimp and gltf-transform work from the command line.

Limitations

• Textures export only for models the viewer shows textured (a MeshStandardMaterial with maps). A model in the plain white clay/matcap preview, or one without UVs, exports geometry only.
• Works on your own Meshy models, for personal use.
• It reads the model from the viewer in your browser; nothing leaves your machine.

Community

Questions, ideas, or bugs — join the Discord: https://discord.gg/VYYS9kEcjT.

Development

npm install    # build and test tools
npm run build  # bundle the extension into dist/
npm test       # run unit tests (Vitest)
npm run icons  # regenerate icons from logo.png

• Geometry capture and scene discovery: src/main/capture.js
• GLB writer: src/main/glb.js
• Page bridge (MAIN world): src/main/index.js
• Toolbar button: src/ui/index.js
• Design and investigation notes: docs/