What CSS minifiers also leave behind
This looks like a fun project indeed!<p>Unfortunately every time I read something about minifiers I got the feeling that people are optimizing the wrong problem.<p>If you gzip data over the line it's already compressed. So minifying your stuff will only help you a little.<p>The problem is on the client side. You can compress what you like but if the browser starts dropping frames because it has to compile/handle a ton of Javascript and CSS then minifying doesn't help the end user.