Responsive Resize v1.3

Mac App

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 requires.

Responsive Resize


  • 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
  • Rotate Device
  • Ability to quickly adjust the viewport
  • Increase or decrease the with by a set value
  • Light or Dark application theme
  • Fullscreen mode
  • Devices panel
  • Preferences panel


Price free
Version 1.3
Platform Mac
Requirements OSX 10.8+
Downloads 101


  • v1.3 — Added the ability to switch user-agent strings to iOS7 (iPad & iPad) and Safari 7 (Mac)
  • v1.2 — Ability to change User Agent Strings, Open last site on launch, empty cache, delete cookies, improved light theme, added menu items and keyboard shortcuts, added application help
  • v1.1 — Bug fix
  • v1.0 — initial release