> I wonder if there's really no way to stop Firefox from wasting that space above the tabs Don't put the tabs on the top of the screen. You are probably conce

> I wonder if there's really no way to stop Firefox from wasting that space above the tabs Don't put the tabs on the top of the screen. You are probably concerned about vertical real estate because you have a 16:9 display. Horizontal bars just don't make sense any more. Install the Tree Style Tab extension. Shove all your tabs into a sidebar. Now your browser has an eye-friendly aspect ratio. Plus you can have more than twenty tabs open at once without reducing the page title to a mere favicon.