July 13

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Unlocking Seamless Design: Discover the Ultimate Free Tool for Responsive Web Testing – Responsively!

By Sebastian

July 13, 2025


In the fast-evolving world of web design, ensuring your websites look flawless across various devices and screen sizes is critical. With users accessing websites on smartphones, tablets, laptops, and desktops of differing dimensions and resolutions, responsive testing becomes a cornerstone of a successful design workflow. Enter Responsively — a powerful, free, and open-source tool designed to streamline your responsive web testing like never before.

What is Responsively?

Responsively is a desktop application available for Windows, Mac, and Linux platforms. Once downloaded and installed, it allows web designers and developers to preview their websites simultaneously on multiple devices and resolutions. This synchronous multi-view capability ensures you can swiftly catch design flaws or responsiveness issues without toggling between devices or browsers.

Key Features That Make Responsively Stand Out

1. Synchronized Multi-Device Views

When you load a website within Responsively, the interface automatically displays multiple device screen views — typically mobile, tablet, and desktop. Any interaction you make in one viewport, such as scrolling or clicking, mirrors across all other open views simultaneously. This feature saves immense time and provides an immediate sense of how your site behaves across different device types.

2. Device-Specific Interactions and Controls

Responsively offers flexibility by allowing you to disable event mirroring on demand. This means if you want to interact with a particular device view independently — say, test a mobile-specific navigation menu without affecting others — it’s easy to toggle synchronization off and back on.

3. Developer Tools Inside the App

Want to debug or inspect elements? Responsively integrates developer tools, similar to Chrome DevTools, directly within each viewport. This eliminates the need to jump into a separate browser session or window, enhancing your debugging speed and convenience.

4. Device Orientation and Pixel Rulers

For devices like tablets and mobiles, you can flip screen orientations between horizontal and vertical, allowing you to check landscape and portrait modes instantly. The app also features pixel rulers to measure and verify layout spacing with precision.

5. Accessibility Testing with Visual Impairment Simulation

Accessibility is a vital aspect of modern web design, and Responsively supports testing for visual impairments. Its color blindness simulation lets you preview how your design looks to users with various types of color deficiencies (e.g., red-green, blue-yellow). This quick check aids in creating more inclusive designs.

6. Fullscreen Mode for Device Views

If you want a larger and less cluttered view of a specific device, the fullscreen mode focuses solely on that viewport. This feature is essential when you want a closer look without distraction from other panels or toolbars.

7. Custom Device Suites for Tailored Testing

One of the most compelling elements of Responsively is its device suites functionality. A suite is essentially a predefined or custom collection of devices that reflect the screen sizes and resolutions you want to test regularly. You can:

  • Manage suites by adding or removing devices such as different smartphone models, tablets, laptops, or desktops.
  • Create custom devices by specifying custom screen resolutions, DPI, and touch capabilities.
  • Rearrange the devices in the suite based on your priorities.

This customization ensures your testing environment suits any current project’s specific needs.

How to Get Started with Responsively

  1. Download and Install
    Head to the Responsively website or repository, download the version compatible with your OS, and install.

  2. Open the App and Enter a URL
    The app starts with a default site (Google), but you can enter any URL you’re working on.

  3. Interact and Test
    Use the synchronized views to scroll, click, and dynamically test interactions.

  4. Leverage Additional Features
    Try out the dev tools, flip device orientation, take screenshots (partial or full-page), and experiment with accessibility filters.

  5. Customize Your Suites
    Navigate to the suites manager to add, remove, or create custom device profiles tailored for your testing workflow.

Why Responsively is a Game-Changer

  • Free and Cross-Platform: No subscription or licensing fees, with broad OS support.
  • Time-Saving Synchronization: Test multiple devices in real-time without extra hardware.
  • Rich Feature Set: Developer tools, accessibility checks, orientation toggles, and custom suites optimize the entire testing lifecycle.
  • User-Friendly Interface: Designed for quick onboarding with tools right at your fingertips.

Conclusion

Responsively fills a vital gap in the web development toolkit: a free, robust, and comprehensive responsive web testing environment. With its intuitive interface and deep feature set, it empowers designers and developers to ensure their websites provide a seamless, accessible experience across all device types. Whether you’re a freelancer, part of a larger dev team, or a hobbyist, incorporating Responsively into your workflow will enhance your ability to deliver polished, cross-device-ready websites efficiently.

Give Responsively a try today and unlock new levels of responsiveness testing convenience!

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Sebastian

About the author

They say the pen is mightier than the sword, but Sebastian Hayes wields email like a magic wand. This email marketing wizard transforms ordinary inboxes into enchanted realms of engagement, where open rates soar and conversions flourish like wildflowers. Forget dry newsletters and generic blasts; with Sebastian's guidance, your emails will become captivating stories and personalized journeys that resonate with every reader.

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