With Page to Popup extension you can easily see your desired website (mobile view) in the browser's toolbar popup.
Some features: 1. Open any desired website (should support mobile view) in browser's toolbar popup. 2. Available in 5 different mobile views (iOS, Android, Windows Phone, Tizen and Firefox OS). 3. Highly Customizable: change panel size (width & height) to your desired size. 4. Has the option to block Ads within the popup UI.
Note: in order to report bugs, please fill the bug report form at the addon's homepage (http://mybrowseraddon.com/site-to-panel.html).