phosphorus runs your Scratch projects really fast by compiling them to JavaScript. Try it out by pasting a URL or project ID into the field below or .
Get a link to a web page that automatically runs your project.
Include the phosphorus player in your web site.
This page is a direct fork of phosphorus. It adds in cloud support and an updated project fetch api with the ability to convert sb3 to sb2. It is reccomended to use forkphorus instead, as it has better support then phosphorus, and loads scratch3 projects natively.
phosphorus was created by Nathan (blob8108). Its CPS-style compilation and overall
design was inspired by Rhys's sb2.js. It would have more bugs if not for Truman and Tim. It uses the JSZip library, created by Stuart
Knightley, David Duponchel, Franz Buchinger, and António Afonso, to read .sb2 files and compressed projects, and
the canvg library, created by Gabe Lerner, to render SVGs in
<canvas> elements.
If you need a mirror for forkphorus you can go here.