A Firefox add-on to show the screen width and height when resizing the window
What is ResponsiveHelper?
ResponsiveHelper is a Firefox add-on that provides a convenient way to view the screen width and height in real-time while resizing the browser window. This tool is especially useful for web developers and designers who need to create responsive websites and ensure an optimal user experience across various screen sizes. With ResponsiveHelper, you can easily test the responsiveness of your website and make necessary adjustments to ensure it looks and functions correctly on different devices and screen resolutions.
ResponsiveHelper is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install ResponsiveHelper if you trust the publisher.
ResponsiveHelper has earned a fairly good reputation and likely can be trusted.