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Polypane
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Features
Everything you need
Responsive Design
Mobile screens to 5K monitors, get all viewports in one overview.
Accessibility
Your site should work for everyone. Polypane gives you the tools.
Site Quality
Give users the best experience on every device and network.
For Who
For Developers
For Designers
For QA
For Marketers
For Agencies
Free Online Tools
Color Contrast Checker
CSS Specificity Calculator
Viewport Sizes Visualizer
Create Polypane Workspace
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