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The browser for ambitious web developers.

Build better websites in less time with a stand-alone browser that makes your site more responsive, more accessible and more performant. Save hours on each project, love every minute of it.

You're in great company

Talented developers from these companies use Polypane.

For ambitious web developers and designers

Like using DevTools with cheats enabled.

Powerful dev tools, multiple synced viewports, full-height screenshots, over two dozen debug tools, device and media query emulation, built-in live-reloading and more.

Responsive design

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


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!