Polypane
The browser for ambitious web developers
Founded
2019
Starting Price
$9
Category
Developer Tools
Last updated March 10, 2026
About Polypane
Polypane is a Chromium-based development browser displaying sites in multiple synchronized viewports simultaneously, consolidating 25+ debug tools and 80+ accessibility tests for responsive, accessible web development.
Pros & Cons
Pros
- Multi-viewport eliminates constant resizing
- 80+ built-in accessibility tests
- Responsive founder with monthly updates
- Replaces multiple extensions
- Synced interactions save time
Cons
Key Features
Synchronized Multi-Viewport
Multiple screen sizes with synced scrolling, clicks, and forms
80+ Accessibility Tests
WCAG scanning, color contrast, focus order, screen reader simulation
25+ Debug Tools
Z-index, CSS grid/flexbox, dark mode, visual regression
Device Emulation
Pre-configured presets with CSS media query detection
Disability Simulators
Color blindness, tunnel vision, dyslexia simulation
Live Reloading
Zero-config reload for changed CSS and images only
Social Previews
Open Graph and Twitter Card metadata preview
Full-Page Screenshots
Synchronized screenshots across all viewports
Pricing
Individual
$9/user/month
- Single user
- 3 computers
- All features
Business
$39/month
Best For
Responsive Development
See all breakpoints simultaneously
Accessibility Auditing
Run 80+ WCAG checks and simulate disabilities
Cross-Device QA
Verify across dozens of device presets
Client Presentations
Full-page screenshots for client review
