Polypane - The browser for building great web experiences

Building great web experiences is frustrating and complex. Polypane makes it easy.
Polypane is a cross-platform browser and devtool to develop, debug and test sites and apps twice as fast. Be confident your sites and apps work everywhere and for everyone.

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this is so cool! Is there an option to flip all devices landscape? working on my landscape mobile experience
Hi Alex, Polypane knows about portrait vs. landscape on mobile and tablet devices. Each pane can be flipped between portrait and landscape by double clicking the width or height, and if you change a pane it will remember being landscape or portrait!
Ace! thanks. Found this on the right day! I'd like to see maybe a shortcut to flip all panes at once but aside from that looks good - Great job
good idea! I'll see if I can get it into the next update.
Hey Alex! Polypane 1.1 was just released with Alt+R as shortcut to rotate all panes ;)

Hey all!

First off, thanks for hunting Polypane!

With Polypane, I want to build the browser for developers, designers and everyone else that works with the web. It's filled with features that make you more efficient and help you develop faster.

I've been working on this since 2015, starting with seeing if I could get a browser to display a site at multiple responsive breakpoints. From there, I've just been improving and expanding the concept into a fully featured browser with really unique features for developers and designers.

As a solo developer, designing and building everything is an incredible amount of work, but it's so amazingly rewarding.

I can't wait to see what you all think of Polypane. It sounds like hyperbole, but compared to developing sites using Chrome or Firefox, developing in Polypane takes just half the time (I tested and verified this, many times, over the past few years). I have good hopes that your experiences will show a similar improvement.

Whats new since your last launch?
Hi Aaron! Back in 2017 I posted the first beta on Producthunt (I had been working on it since 2015) and that was a very minimal concept: it showed your site in multiple panes, you could generate a screenshot and that was it. Since then I've been steadily improving Polypane and getting feedback from beta testers. Polypane now syncs all your actions between panes, it knows about common device sizes and about your sites CSS breakpoints. The entire browser is zoomable so you can even design for 4K screens on an ultraportable. There's a ton more features in there (css layout debugging, focus mode, pane zooming) and even more that'll be implemented in the coming months and years.
Looks great, I'm gonna get a team license for Modulz. Congrats on the launch!
Thanks Colm!
Enjoyed being part of the beta! Congrats on the launch 🎉
Thanks! And thank you for testing out the beta!
Looks amazing Kilian! Well done. Definitely will be trying this!
Thank you Kelvin!
upvote for this browser design!
Thanks!
Looks solid, congrats on the launch!
Thanks Patrick!
Looks great — love that you can see multiple device/screen sizes at once and that actions are synced across them! Congrats on the launch Kilian!
Thanks Bobbi!
Too much money.
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