I build a lot of responsive sites and often times I realize explaining how the site will look on a mobile phone or tablet is very difficult to do- so I decided it would be best to show them.
I put this utility together to help share with clients what their site looks like as well as assist me with the construction of responsive sites when I don’t have access to several devices to test on. For developers, you shouldn’t use this tool to replace all your responsive testing but it makes a great tool in between product check points.
This utility loads my business page on load; however, you can put any URL into the field and hit ‘enter,’ which will load that page on the screen. Also, you can use GET variables (instructions on page) to easily send a client a link so when they load the page they see their site and not mine. Pretty helpful, right?
check out the responsive design simulator here.