Google’s Page Speed and invalid HTML

I’ve used Google’s Page Speed plug-in for Firebug a lot since it was released last year. Even though it’s not as good as Yahoo’s YSlow plug-in, it’s still very usable for some scenarios YSlow doesn’t support – my favorite being the analysis of unused CSS and selector optimizations. It also has a feature that will tell you how much your web page will gain by minifying the HTML. Not only does it analyze the difference but it can also generate an optimiz... [More]