Brusher – Tiny utility to create live webpage backgrounds (github.com)

Seems interesting, will give it a try tonight. Thanks for sharing!

I can't remember right now, but I saw a similar background on some website where they had put the blurry demo of the website in the background and moving the mouse over it kept it un-blurring. Looks nice!

Nice effect. But it is interesting how "lightweight" is used here. Sure, the library might be lightweight, but the CPU usage of my Chrome instance jumps to nearly 100% as long as I play with the demos. That's not "lightweight" for the user.