Shapeshifter helps you design responsive websites and interfaces by providing a constantly available set of viewport controls within your browser, which allows you to test the responsiveness of your creations at every step of the way.
alt-shift-u
: Browser viewportalt-shift-i
: iPhone 3G/4 viewportalt-shift-o
: iPhone 5 viewportalt-shift-p
: iPad viewportalt-shift-l
: Rotate viewport (only available for mobile viewports)alt-shift-g
: Go to a new location