http://www.responsivetester.net http://www.responsivetester.net Not sure it's the project I'm most proud of, but as far as a simple tool I use everyday, this i

http://www.responsivetester.net http://www.responsivetester.net Not sure it's the project I'm most proud of, but as far as a simple tool I use everyday, this is it. One reload shows you the site in multiple sized iframes, so you can quickly test breakpoints.