BreakpointTester | Test Your Responsive Design By Breakpoints, Not By Device Width : "Bookmarklet Which Scans Website Stylsheets (Same Domain) To Find User Defined Media Query Breakpoints.Basically, It Let's You Check Responsive Designs By Breakpoints Rather Than Fixed Device Widths."
BreakpointTester | Test Your Responsive Design By Breakpoints, Not By Device Width : "Bookmarklet Which Scans Website Stylsheets (Same Domain) To Find User Defined Media Query Breakpoints.Basically, It Let's You Check Responsive Designs By Breakpoints Rather Than Fixed Device Widths."