Efficient Tool for Website Responsiveness Testing

Responsify Viewer is a Firefox extension designed for web developers to assess the responsiveness of websites across various screen sizes. This tool allows users to manipulate the viewport dimensions dynamically using a slider, enabling a clear visualization of how a site adapts to different widths and heights. The extension is particularly useful for testing websites without being restricted to fixed dimensions, offering flexibility in design evaluation.

With its user-friendly interface, Responsify Viewer streamlines the process of responsive design testing. Developers can quickly adjust the viewport settings and observe changes in real time, making it easier to identify design issues and optimize user experience across devices. As a subscription-based tool, it provides essential features for web development professionals aiming to enhance the adaptability of their projects.

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App specs

  • License

    Subscription

  • Version

    0.1

  • Latest update

  • Platform

    firefox

  • Size

    151.34 KB

  • Developer

    • Karthikeyan Rajendran

Program available in other languages



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Last scan
Wednesday, October 8, 2025
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File Integrity

File
0.1.xpi
SHA256
87276303c535a5fb929dab552ce94450518e863f4f466b3c631174348fcadb31
SHA1
fabd7870ae77b28a61058ec00cc63e1cbd3695c4

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Responsify viewer has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware.