PolypaneThe browser for
responsive design
Build and test your sites on many devices at once.
Save time and catch bugs before your visitors do.
Trusted by teams worldwide
Firstversionist creates software used by companies like:
In the past ten years responsive design has changed how we make sites. But our browsers haven't adapted. Until now.
Stop resizing your browser
You can make your site or web app look great in one go with Polypane's side-by-side view of all devices. No resizing needed.
Sync all your actions
Interacting with one device means interacting with all of them. It just works.
Detect CSS breakpoints. Automatically
Polypane gives you insight into your CSS breakpoints like no other browser.
Powerful devtools
Devtools like you're used to, with support for devtools extensions too.
Live reloading built in
Your site updates with every change you make. CSS and images are updated without a page refresh, like magic.
Light and dark modes
Polypane comes in a light and dark theme, so it always fits in with your desktop.
True full page screenshots
You want best in class screenshots, and we have them. No one handles viewport units and fixed element as well as us.
That's not all
With more features like different modes, layout debugging, customisable presets, workspace favorites and global zooming, Polypane offers everything you need.
Save time and catch bugs before your visitors do
Try Polypane for freePolypane is easily one of the most useful tools for modern web designers and developers.
Polypane are building a smart design environment where you can preview your designs across a multitude of browsers, devices and viewports.
Discovering Polypane was a game-changer to how I develop responsive websites. I couldn't imagine going back to using the Chrome inspector.
If you’re developing a website, Polypane comes in quite handy. Already an essential tool.
An invaluable tool for responsive website testing. A must-have for front-end developers.
Polypane quickly became an indispensable part of my workflow. With a tool like this, you have no excuse not to create great, responsive experiences!
A vital part of the web development toolkit for testing and troubleshooting responsive design.
Trusted by teams worldwide
Firstversionist creates software used by companies like:
Get Polypane
Build and test your sites on many devices at once.
Save time and catch bugs before your visitors do.
