Cooling signalUnknownHigh-risk permissions

Viewport Lab

Open any page in exact device viewports (locked size), rotate, theme preview, and take clean screenshots.

Users11Current public install base

Rating--Store average score

Reviews0Public review volume

Manifest versionV3Extension platform version

7-day growth-1Net users gained this week

7-day growth rate-8.33%Relative weekly velocity

Preview

Viewport Lab Media preview

5 assets

Trend

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User Growth Over Time

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Growth overview

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1-day growthGrowing

+1+10%

7-day growthDeclining

-1-8.33%

30-day growthFlat

00%

Technical snapshot

Version, languages, and crawl freshness

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Version1.0.0

ManifestV3

Size36.87KiB

Languages1English

Published--

Store updated--

Last crawled--

Overview

Product summary

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🌍 The Story Behind Viewport Lab

Viewport Lab began life as a side-project: Flutter Responsive Tester.

As a Flutter developer, I needed a simple way to lock a page into real device sizes, rotate between orientations, and quickly check how my app responded — all without the hassle of external emulators.

But something unexpected happened.

Frontend devs from other ecosystems (React, Vue, Angular, Svelte, plain HTML/CSS) started using it too. The problem wasn’t just Flutter — it was responsive testing itself.

That’s when the project evolved and got a new name: Viewport Lab.

Reviews

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5★

4★

3★

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1★

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