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About Polypane

Polypane is a powerful, all-in-one browser and development tool designed to help ambitious web developers build more responsive, accessible, and performant websites in less time. Created by a seasoned web developer who grew frustrated with the limitations of traditional browsers, Polypane offers a suite of advanced features that streamline the development process. With its synchronized viewports, developers can see their work across multiple devices and screen sizes simultaneously, eliminating the need for constant resizing and testing. But Polypane is more than just a responsive design tool. It also boasts a robust set of accessibility features, including over 80 tests and 19 different simulators to ensure your site works for users of all abilities. And with its pixel-perfect social media previews, you can ensure your content looks great across all platforms. Whether you're a seasoned pro or just starting out, Polypane is the ultimate companion for web developers who demand the best from their tools. With its powerful debugging capabilities, seamless cross-browser and cross-device testing, and a constantly expanding feature set, Polypane is the browser that puts you, the developer, first.

• Responsive Design

  Mobile screens to 5K monitors, see all viewports in one overview.

• Accessibility

  Over 80 accessibility tests, 19 different simulators and 20+ debug tools.

• Side by Side Views

  Dark and light, reduced motion, screen and print. No more manual switching!

• Synced Panes

  Your keyboard and mouse interactions are synced between all viewports. Scrolling, hovers, clicks and form input, you only need to do it once.

• Cross-Browser and Cross-Device

  Share your local development environment anywhere, on any browser, on any device.