[kijin]

Chrome devtools allow you to simulate low network and CPU performance, but I'm not aware of any setting that gives you pixelated text and washed-out colors. Maybe that will make a useful plugin, if you can accurately reproduce what Microsoft ClearType does at 96dpi!

[carlosjobim]

Simulating low DPI displays is built in to Safari's dev tools, but it's not of much use, considering the different font rendering between the platforms.