Responsive Resize is a tool for aiding development and testing of responsive websites. Responsive Resize works like a mini-browser with an adjustable viewport which can be altered to match the dimensions of virtually any mobile, tablet or desktop device. Responsive Resize comes with over 40 preset virtual devices, but you can also add as many new devices as you require.
Features:
History remembers up to 25 sites
Status bar gives load times
Over 40 preset Mobile, Tablet & Desktop devices
Ability to create as many new devices as you require
Ability to choose from preset User Agent Strings - or enter any string you require
Rotate Device
Ability to quickly adjust the viewport
Increase or decrease the width by a set value
Light or Dark application theme
Fullscreen mode
Devices panel
Preferences panel
What’s new in version 1.3
Updated on Feb 20 2014
Version 1.3:
Added user-agent strings for iOS7 (iPhone and iPad) and user-agent string for Safari 7