Responsinator is a free Chrome extension tool developed by Ghanshyam Katriya. As an add-on in the Browsers category, Responsinator allows users to easily check the responsiveness of any website.

To use Responsinator, simply click on the toolbar icon of the chrome extension. This will open a popup window containing the Responsinator tool. Enter the URL of the website you want to check for responsiveness and press Enter.

One of the main features of Responsinator is the ability to choose from a list of available devices. This allows users to test how a website looks on different screen sizes and resolutions. Additionally, users can switch to landscape mode to test the website's responsiveness in that orientation.

Responsinator also provides the option to test websites with custom resolutions, allowing users to simulate specific screen sizes. Furthermore, Responsinator allows users to test locally hosted websites, making it a versatile tool for developers and designers.

With its user-friendly interface and comprehensive features, Responsinator is a valuable tool for anyone involved in website development or design.