The browser for ambitious web developers.
A stand-alone browser with everything you need to build responsive, accessible and performant web sites and web apps.
All the tools you need to Build, Debug and Test sites
Develop and test every aspect of your site without context switching. From responsive design, to accessibility, to meta tags and performance, Polypane has you covered.
Responsive design
Mobile screens to 5K monitors, see all viewports in one overview.
Lint as you go
Check your structure, metadata and accessibility. Get instant suggestions.
Side by side views
Test dark and light and more without changing your system settings.
This thing is FAST and the synchronized scrolling works amazingly. Prepare to be impressed.
Polypane is really saving my bacon. Kilian knocked it out of the park, this is my new favorite development tool.
Polypane helped me see a spacing issue between two breakpoints that I wasn’t aware of. Love it 💯
I've started playing around with Polypane and 🤯. It has awesome debugging tools, I'm really impressed.
Everything you do is kept in sync
No matter how many devices you're working with, your actions are mirrored across all of them. Click, scroll, type, hover or edit styles on one and see it happen on all.
Navigation
Reloads
Scroll
Clicks
Hover
Form input
Inspect
DOM Edits
Layout Debugging
CSS Edits
Live Reload