Whether your a developer or a designer you most likely have heard of responsive design. This little extension helps you out by opening the current page you are visiting in new window 320px wide.
You can Follow the below Step By Step procedure to install the Responsive Window Chrome Extension to your Chrome Web browser.
It is the Responsive Window Chrome extension download link you can download and install Chrome Browser.
Responsive Inspector Reloaded allows inspecting page media queries. Same as original, but it works on modern browsers.
Fast and easy way to test your responsive design in multiple viewports
Viewport detector for bootstrap 3
To view the page in different device screen sizes, just by a click
Show multiple screens once, Responsive design tester
Test your websites responsivness
Test responsive design of any web page with one click. Extension works when you click to extension icon only.
Determines browser window width and which bootstrap viewport is in use.
Mobile/Responsive Web Testing for Front-End Web Developers
Test responsive web designs or mobile pages and see if it is mobile friendly