There is an excellent and useful web app which acts as mobile emulator and tablet emulator to test mobile websites responsive design, means it is a way to check our mobile web design across variety of mobile and tablet devices using this single web app.
With the increase of smart phones and 3G, 4G users start browsing the websites through mobile and it is necessary to make the web design to adapt and looks neat in mobile phones too, where this online tool comes handy.
Launch >> Mobile and tablet emulator
Mobile Emulator Web app screenshots:Screenshot 1:
Install this web app as Google Crome web app, to access easily to check the screen resolutions of different mobile devices.