Responsively App
Design
Inspect a website in several viewport previews at once
Editorial discoveryOpen source
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Full sizeAbout Polypane
Polypane is a browser for developing and checking websites. Open a test page at several widths, then compare how layout, scroll and navigation behave as the space changes. Its accessibility and debugging tools can draw attention to issues worth investigating without checking each size in a separate window. Use it alongside checks on real devices and target browsers because viewport simulation cannot reproduce all browser and hardware behavior. A useful trial includes a page with real interaction, a keyboard navigation pass and a layout your team has found hard to debug. Check platform and plan support for the setup you intend to use.
Editorial discovery. Check the official website for current features and pricing. Source: Official product source .
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