ScreenSync

What it does

ScreenSync lets frontend developers preview their website on mobile, tablet, laptop, and desktop viewports simultaneously in a single Chrome tab. Stop toggling Chrome DevTools device toolbar one screen size at a time. With ScreenSync, you see all sizes at once.

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  Responsive Viewer2019 · chromewebstore.google.com · ▲393

  View multiple screen dimensions in one view

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  Responsive Screenshots2017 · ▲358

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  Responsively2020 · responsively.app · ▲458

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  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…

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  DesignSync2025 · apps.apple.com · ▲84

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  Screen Size Map2019 · screensizemap.com · ▲206

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