Improve your web development workflow by 5x.

All the tools you need to build responsive, accessible and fast websites and apps in a single standalone browser.

Great companies use Polypane

Save time developing, designing and testing websites and still end up with less issues and a better result.

Develop responsive websites and apps five times as fast and get better results, because you wont be skipping screen sizes and wishing for the best.

Build higher quality websites, whether you use Wordpress, React, Angular, Svelte, Bootstrap, Drupal or any other CMS, library or framework.

Powerful developing, debugging and testing tools are built right in like devtools extensions, live reloading, accessibility testing and more.

Never resize your browser again

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

Syncs all your actions

Interacting with one viewport means interacting with all of them. Scrolling, hovers, clicks and forms, it just works.

Edit all panes at the same time

Make changes to all panes at once using our Element inspector and Live CSS editor.

Social media previews and meta info

Live previews of how your site looks when shared on social media, and all your meta information visible.

Intelligent Live and Hot reloading. For everyone.

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

Powerful developer tools

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

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.

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.

Everything you need to make awesome web experiences

Unlimited Screens
Scroll Syncing
Keyboard Syncing
Device Presets
Freeform Resizing
Developer tools
Social Media previews
Horizontal Mode
Device emulation
Vertical Mode
Handoff support
Live Reloading
Accessibility Debugging
Focus Mode
Live CSS Editing
Full Mode
Color Blindness Simulators
Full Page Screenshots
Image Comparison
CSS Breakpoint Detection
Overview Screenshots
Touch emulation
Devtools Extensions
Custom Headers
Dark Mode
…And more to come!

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Developers and designers love Polypane

Here's what they have to say:

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

Stephen HayAuthor of Responsive Design Workflow

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

Sara SoueidanIndependent front-end UI engineer, Speaker/Trainer

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

Graeme FultonFounder 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 MatteiFounder at Makerlog

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

Vivian GuillenFrontend Developer & Curator at Tailwind Weekly

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

Colm TuiteCreator of Modulz

Read more testimonials

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