The Joys of HTML5 Introducing the new HTML5 Hard Disk Filler™ API Oh hai there... Filling your hard disk with lots of cats... Used MB of disk space! Stop the madness! (gives your disk space back) Works in Chrome, Safari (iOS and desktop), Opera and IE. Firefox is immune to this hackery. Read about how this works. Hacked by Feross. Tweet Source code is available. Happy hacking!