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Interfaces for side-by-side comparison of web layouts across different resolutions.
Distinguishing note: Focuses on the previewing interface, not the underlying browser instances.
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This application is a specialized web browser designed to streamline responsive design testing by rendering multiple viewport configurations simultaneously. It functions as a cross-platform testing suite that allows developers to preview and interact with web content across diverse mobile, tablet, and desktop device profiles within a single workspace. The tool distinguishes itself by synchronizing user interactions and application state across all active browser instances. When a user navigates, scrolls, or clicks in one view, these events are broadcast to every other open viewport to ensure
Displays multiple device screens side-by-side to compare layouts across different resolutions simultaneously.