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OpenJsCad.org is a more up-to-date OpenJsCAD frontend where you can edit .jscad files either locally or online via JS editor (built-in). A few functions are available to make the transition from OpenSCAD to OpenJSCAD easier (scad-api built-in), as well CLI (command-line interface) for server-side computations with NodeJS.

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Table of Contents


Immediate Use (no installation)

Go to OpenJSCAD.org (Tested browsers include Chrome, Firefox, Opera, Safari)

Use within a Web Site (pre built files)

cd base-directory-of-website
git clone https://github.com/jscad/OpenJSCAD.org
cd OpenJSCAD.org
<start a web server here>

And then access the contents via the URL of the web-site.

  • index.html for the standard version
  • viewer-minimal.html for the barebones viewer
  • viewer-options.html for the 'all options' variant of the above

NOTE: You might need configuration changes to allow access to the some of the contents (examples etc).

Use of proxies for remote file loading:

if you want the capability , just like the official OpenJSCAD.org site, to load remote projects/files directly from the web based user interface, but without the hassle with CORS issues, you can use a proxy file (see remote.pl & remote.php): this is a server side script that does the following

  • caches the remote file locally on the server
  • returns the local path to the downloaded file for OpenJSCAD to use

use and path of the proxy can be set by:

  • changing the proxyUrl value in src/ui/index.js
  • since this is hardcoded , if you do not use the provided dev server, rebuild your main file (npm run build-web etc, see Development)

then you can use it like so: https:///?uri=http://www.thingiverse.com/download:164128 or https:///#http://www.thingiverse.com/download:164128

Note: a PR with a node.js based proxy would be a welcome addition :)

Use as Command Line Interface (CLI)

Install node.js

IMPORTANT: you need a recent , LTS version of Node.js > 6.x.x we test OpenJSCAD on node.js version 6.x.x & 7.x.x all other versions are not guaranteed to work !

An easy way to install any Node.js version is to use NVM

  • after installing nvm type nvm install v6 (recomended)
  • then nvm use v6

Install OpenJSCAD CLI:

CLI(command-line interface) use

 npm install -g @jscad/openjscad

you can now turn the examples (or your own designs) into stl etc files as follows :

% cd examples/
% openjscad example005.jscad                         # -- creates example005.stl as default
% openjscad example001.jscad -o test.stl
% openjscad example001.scad -o example001scad.jscad  # -- convert .scad into .jscad
% openjscad frog.stl -o test.jscad                   # -- convert .stl into .jscad
% openjscad logo.jscad -of amf                       # -- convert logo.jscad into logo.amf

Use with Node Modules

Note: you need a recent , LTS version of Node.js > 6.x.x, see here for more details) all the same installation & version recomendation as for the use as command-line also apply

npm install --save @jscad/openjscad

and then simply import and use openjscad:

const jscad = require('@jscad/openjscad')
const fs = require('fs')

var script = `function main() {
   return [

// generate compiled version
var params = {}
jscad.compile(script, params).then(function(compiled) {
  // generate final output data, choosing your prefered format
  var outputData = jscad.generateOutput('stlb', compiled)
  // hurray ,we can now write an stl file from our OpenJsCad script!
  fs.writeFileSync('torus.stl', outputData.asBuffer())

you can also use the 'generateOutput' function directly with CSG/CAG objects ie :

const csg = require('csg').CSG
const input = csg.cube([1, 1, 1]) // one of many ways to create a CSG object

const outputData = jscad.generateOutput('stlb', input)

// hurray ,we can now write an stl file from our raw CSG objects
fs.writeFileSync('torus.stl', outputData.asBuffer())

Module api

compile(params, source)

compile OpenJsCad code and generates CSG representation this returns a promise that gets resolved with the CSG object.

(the ordering of parameters was created with currying in mind)

params the set of parameters to use source the OpenJsCad script we want to compile

generateOutput(outputFormat, csgs)

generate output data from a CSG/CAG object or array of CSG/CAG objects

outputFormat the output file format csgs the CSG/CAG object or array of CSG/CAG objects

Note: for now you need to use outputData.asBuffer() to get a Node.js buffer for writing to disk etc

Use of the different modular components directly

From version 1.0.0 onwards, almost all the individual parts of this project are available directly as scoped NPM modules , and can be used independently from this repo. The full list of these is available here: https://www.npmjs.com/org/jscad

One example of what can be achieved with this can be found here This means you can :

  • easily create your own renderer for the CSG/Cag data structures
  • create custom UIs
  • use the different parts in Node.js or the Browser
  • cherry pick what formats you want to use for input/output without needing the dependencies of all packages
  • lots more !

This will be expanded upon in the future, and is the backbone of the newer, modular Jscad


We offer pre-built versions of OpenJSCAD to be uses directly here :

but you can also rebuild them manually if you need :

  • standard: npm run build-web
  • minimalist: npm run build-min
  • with options: npm run build-opt

Adding new features in CSG.js or other modules:

Since OpenJSCAD is made up of multiple dependent modules (csg.js, openscad-openjscad-translator etc), the easiest method is to use npm link to have a 'live' updating development version of OpenJSCAD:

  • create a base directory
  • clone this repository git clone https://github.com/jscad/OpenJSCAD.org.git
  • go into OpenJSCAD.org folder cd OpenJSCAD.org
  • install dependencies npm install
  • if desired, make the openjscad command refer to the code in this folder: npm link
  • if desired, start dev server: npm run start-dev

Then, for example for CSG.js:

  • go back to base directory cd ..
  • clone CSG.js git clone https://github.com/jscad/csg.js.git
  • go into OpenJSCAD.org folder again cd OpenJSCAD.org
  • now type npm link ../csg.js to make @jscad/csg refer to local ../csg.js.

You can now make changes to the CSG.js code and see it impact your locally running copy of OpenJSCAD live.


Known Issues

There are a few known issues, please be sure to check this out before submitting additional bug reports/issues.


OpenJSCAD.org is part of the JSCAD Organization, and is maintained by a group of volunteers. We welcome and encourage anyone to pitch in but please take a moment to read the following guidelines.

Thank you to all the people who have already contributed to this project:

  • If you want to submit a bug report please make sure to follow the Reporting Issues guide. Bug reports are accepted as Issues via GitHub.

  • If you want to submit a change or a patch, please see the Contributing guidelines. New contributions are accepted as Pull Requests via GithHub.

  • We only accept bug reports and pull requests on GitHub.

  • If you have a question about how to use the OpenJSCAD.org, then please start a conversation at the OpenJSCAD.org User Group. You might find the answer in the OpenJSCAD.org User Guide.

  • If you have a change or new feature in mind, please start a conversation with the Core Developers and start contributing changes.

Small Note: If editing this README, please conform to the standard-readme specification.


See for more details


OpenJSCAD and its sub components are built upon great open source work, contribution & modules

  • csg.js core & improvements by Evan Wallace, Eduard Bespalov, Joost Nieuwenhuijse, Alexandre Girard

For input/output


and many more!


Thank you to all our backers! 🙏 [Become a backer]


Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]


The MIT License (MIT) (unless specified otherwise)


Simple JSCAD example (logo.jscad) try it:

More sophisticated JSCAD example, with functions dedicated to object generation and with interactive parameters (gear.jscad) try it :

Import of STL models (frog-OwenCollins.stl) try it:

Drag & drop a local file:

Drag & drop multiple files (Chrome & Firefox) or a folder (Chrome):

See Also

  • OpenJsCAD, starting point of OpenJSCAD.org
  • OpenSCAD.net, another place of inspiration, where the OpenSCAD translator was adapted from
  • CoffeeSCad, JavaScript simplified (no more {}) (defunct)
  • stl2pov to convert .stl to .pov, and then render via PovRay.org
  • P3D STL/AMF/OBJ viewer

That's all for now,

Rene K. Mueller, Jeff Gay, Mark Moissette & JSCAD Organization

If you find any bugs or have a feature request, please open an issue on github!

The npm package download data comes from npm's download counts api and package details come from npms.io.