Responsive Lab

Overview

View multiple device viewports simultaneously for responsive design testing

Responsive Lab is a developer tool for testing responsive web design across multiple device viewports simultaneously. Key Features: • View websites in multiple device sizes side-by-side (iPhone, iPad, Android, Desktop, and custom viewports) • Take screenshots of individual viewports at exact device dimensions • Drag-and-drop to reorder viewports for easy comparison • Filter viewports by device type (Mobile, Tablet, Desktop) • Toggle between portrait and landscape orientations • Add custom viewport sizes for testing specific dimensions • Dark mode support for comfortable extended use • All processing is done locally - no data collection or transmission Perfect for web developers, designers, and QA testers who need to verify responsive layouts and cross-device compatibility quickly and efficiently.

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Details

Version
1.2.0
Updated
November 10, 2025
Flag concern
Offered by
miichaelbowley
Size
291KiB
Languages
English (United States)
Developer
Email
miichaelbowley@gmail.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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