Talented developers from these companies use Polypane.
All the tools you need to Build, Debug and Test sites
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.
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!