Firefox plugin to randomize screen resolution/plugin data?

When you visit a site you send the site lots of information about your browser such as screen resolution, maybe OS, plugins, plugin versions...etc.

Is there a plugin that can block or even better randomize this data?

I'm not sure a plugin is out there well for free I haven't found one ..to my knowledge your best bet is still use a virtual box if you want to stay under the radar like that.