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Dev tools · May 10, 2026

ViewPort

Offline responsive previewer for VS Code

What it does

ViewPort is a lightweight, privacy-first VS Code extension. It lets you preview your responsive web designs in real device frames (like iPad and Pixel) directly inside your editor. 100% offline, zero data tracking, and no heavy browser overhead.

Does the same job

all alternatives →
  • Viewport2024 · ▲54

    Showcase your design process from concept to completion

  • WD
    Webflow - Design responsive websites visually2013 · playground.webflow.com · ▲503
  • Responsive Viewer2019 · ▲396

    View multiple screen dimensions in one view

  • TY
    Test your website on 180+ device viewports (with multi-device mode)2024 · viewport-tester.com · ▲74

    Hey HN! We do a lot of frontend testing, and one thing we find frustrating is the limited tooling available to observe how a URL renders on different viewports/devices simultaneously. For example, we can use Chrome Inspector's "Device" previews, but we run into the following: - Chrome doesn't keep those devices/viewports up to date, and adding new ones is pretty annoying (we've open sourced our collection of 180+ viewports/dimensions under MIT). - You can’t see multiple viewports at once (and it’s cumbersome switching back and forth) - When you notice a problem, there's no…

  • AV
  • Grid Overlay ProFeb 2026 · ▲106

    A browser extension to visualize grid layouts on any webpage

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