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Polypane

Build amazing sites and web apps. Polypane makes it easy. Polypane is a browser for developers and designers that shows sites in multiple viewports at once and keeps them all in sync while you work. Develop, debug and test sites and apps twice as fast. Make your websites and apps work everywhere and for everyone.

Kilian Valkhof

LAUNCH 3.0! Guess what? We have a new version available! 🤩 📑 Browser tabs 🌑 Dark mode emulation 🎢 Reduced motion emulation 🌐 Updated Chromium 📣 New overlay https://polypane.app/blog/polypane-3-browser-tabs-and-dark-mode-emulation/

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Kilian Valkhof

Create a new free online tool: https://polypane.app/css-specificity-calculator/

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