phosphorus

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 choosing an example.

Turbo Mode

An internal error occurred. Click here to file a bug report.

Package this project

Get a link to a web page that automatically runs your project.

Package Turbo mode Full screen

Embed this project

Include the phosphorus player in your web site.

Start automatically Light controls Hide UI

Report a problem

phosphorus is still in development. Click here to report a problem with this project.

Credits

phosphorus was created by Nathan. 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.

Code

The source code for phosphorus is available on GitHub.