Run Processing sketches straight from the browser.
LafHack compiles, hosts, and plays back Processing and Java sketches with no local setup. Upload once, share a link, done.
Everything you need to share sketches
Upload sketches
Drop in a Processing project folder and it is compiled and normalized automatically, ready to run in the browser.
Run anywhere
Every sketch runs client-side via Processing.js. No installs, no plugins, just a link.
Browse the gallery
Search and filter public sketches from the community in a fast, minimal gallery view.
No "works on my machine"
Your sketch behaves the same in everyone's browser, so the only thing left to explain is the gameplay.
Ready to publish your first sketch?
Sign up and upload a project in minutes.