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Great companies using Polypane

Never resize your browser again

Emulate real devices, use your responsive CSS breakpoints or pick your own dimensions. No resizing needed.

Syncs all your interactions

Your keyboard and mouse interactions are synced between all viewports. Scrolling, hovers, clicks and forms, it just works.

Powerful developer tools

Developer tools like you're used to from Chromium, with support for devtools extensions like React, Vue, Angular, Svelte and more.

Device emulation, without the hassle

Emulate popular devices with a single click. Touch emulation, toggle network conditions, switch between light and dark modes on the fly and send custom headers for each pane.

Dark mode media query ready

Develop your site in light and dark mode at the same time, both in view and synced together. There is no faster way to build sites with dark and light mode.

Make your browser work for you

Edit all panes at the same time

Make changes to all panes at once using our Elements panel and Live CSS editor. We'll automatically import any Google font you use for quick prototyping.

Get the full overview, your way

Line your viewports up horizontally or vertically, focus in on a single viewport in focus layout or get the classic browser style in our full layout. Your choice.

Handoff right where you need it

Your favorite handoff tools are right inside Polypane, side-by-side with your site or app.

Documentation on the side

Quickly show documentation or references in the side browser, so you don't have to lose sight of your project. That's right, there's a browser in our browser.

Everything you need to make great web experiences in a single app.

Detect CSS breakpoints

Use the CSS breakpoints in your stylesheets to automatically generate viewports for every view your site supports.

Your favorite DevTools extensions

Install and use your favorite devtools, with support for React DevTools, Vue.js DevTools, Redux DevTools, Angular, Svelte and many more.

Intelligent Live and Hot reloading
For everyone

Live reloading for any development environment, from plain HTML to Wordpress to React or Vue. CSS and images even update without a page refresh.

Debugging an issue becomes quick and easy

Custom debug tools for each pane

Over 15 overlays let you easily check contrast and accessibility, edit your page visually and get insights into your page structure.

Social media previews and meta info

Live previews of how your site looks when shared on social media. All your meta information is visible so you catch typos and missing info in a glance.

Build pixel perfect sites

Compare an image with the expected design to your live site with different comparison modes built right in.

* We don't think sites have to be pixel perfect. But getting close is nice.

Testing takes minutes instead of days

See like your users do

Test your website with many different visual impairment simulators, like color blindness and cataracts but also situational impairments like bright sunlight or devices with night mode.

Full page screenshots

You want best in class screenshots, and we have them. No other browser comes close in terms of rendering accuracy. We also support screenshots of all your viewports.

Compare full page screenshots

Light and dark modes

Polypane comes in a light and dark theme, so it always fits in with your desktop.

Zoom your entire browser

Sometimes you just need to fit a 4K screen and an iPhone side by side. Zoom individual panes, or your entire browser, to get the view you need.

And much more

Unlimited Screens
Scroll Syncing
Hover syncing
Grid overlays
Keyboard Syncing
Device Presets
Freeform Resizing
Horizontal Overflow detection
Developer tools
Pixel-perfect Social Media previews
Horizontal Mode
Device emulation
Vertical Mode
Handoff support
Live Reloading
Accessibility Audits
Focus Mode
Page outlines
Live CSS Editing
Full Mode
Color Blindness Simulators
Full Page Screenshots
Visual design diffing
CSS Breakpoint Detection
Overview Screenshots
Touch emulation
Devtools Extensions
Custom Headers
Dark Mode
…And more to come!

Developers and designers love Polypane

Here's what they say:

Polypane is easily one of the most useful tools for modern web designers and developers.

Stephen Hay Author of Responsive Design Workflow

It is convenient seeing your work in multiple responsive views at the same time. Love it, 💯

Sara Soueidan Independent front-end UI engineer, Speaker/Trainer

This thing is FAST and the synchronized scrolling works amazingly. Prepare to be impressed.

Vivian Guillen Frontend Developer & Curator at Tailwind Weekly

Polypane is fast, helps me catch issues and the meta information preview is awesome.

Graeme Fulton Founder at Letter

Using Polypane and woah this is awesome! It’s really slick and fast! I was just 5 minutes in and I already fixed a bug.

Sergio Mattei Founder at Makerlog

Polypane is a smart design environment where you can preview your designs across devices and viewports.

Colm Tuite Creator of Modulz

Read more testimonials

Build your next project with Polypane

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  • On Mac, Window and Linux
  • 14-day free trial – no credit card needed
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