forkphorus runs Scratch 3, 2, and 1 projects really fast by compiling them to JavaScript. Try it out by pasting a project ID or URL into the field below, selecting a project file, dropping a file on the page, or exploring the examples studio.
forkphorus is still in development. Click here to report a problem with this project. You can also comment problems here if you don't have a GitHub account.
Include the forkphorus player in your web site.
Get a link to a web page that automatically runs your project. To package to HTML, EXE, APK, or other formats, use the HTML packager.
Changes are applied automatically.
Help test unfinished features. These require a refresh to apply. Please read this first.
TurboWarp typically has better performance and compatibility than forkphorus and has an editor. Give it a try, you might like it.
forkphorus is maintained by GarboMuffin and other contributors. It is a fork of Nathan's phosphorus. Its CPS-style compilation was inspired by Rhys's sb2.js. The JSZip library is used to read .sb2
and .sb3
files. The canvg library is used to render SVGs for Scratch 2 projects. The scratch-sb1-converter library is used to support Scratch 1 projects.
The source code for forkphorus is available on GitHub.