Polypane
The browser for ambitious web developers
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
- $9/month vs free DevTools
- Slows with many tabs/devices
- Steep initial learning curve
- No Selenium/Cypress/Playwright integration
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
- Single user
- 3 computers
- All features
- Up to 10 users
- Email & live chat support
- 20+ users
- Dedicated support
- Invoicing
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
Social Preview Check
Check OG and Twitter Card metadata
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