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    See @jscad for a list of supported packages


    1.6.1 • Public • Published 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.

    Backers on Open Collective Sponsors on Open Collective GitHub version Build Status Dependency Status devDependency Status stable

    Table of Contents


    Immediate Use (no installation)

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

    Use within a Web Site (pre built files)

    cd base-directory-of-website
    git clone
    <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 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.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= or https:///#

    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:

    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
    • go into folder cd
    • 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
    • go into folder again cd
    • 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.

    Contribute 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, then please start a conversation at the User Group. You might find the answer in the 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
    •, 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
    • P3D STL/AMF/OBJ viewer

    That's all for now,

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




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