Test Responsive

Viewport Size Reference - Complete Device Specifications & Responsive Breakpoints | Free Tool

Comprehensive viewport size reference with device specifications for iPhone, iPad, Android, laptops, and desktop monitors. Includes responsive breakpoints for Tailwind CSS, Bootstrap, and Material-UI.

Features & Overview

Viewport Size Reference - Complete Device Specifications & Responsive Breakpoints | Free Tool is a free, high-performance developer tool built to streamline modern web design, responsive testing, and CSS workflows.

  • Instant live preview and interactive controls for real-time frontend feedback.
  • Optimized for all viewports, mobile screens, tablets, laptops, and desktop displays.
  • Generates clean, production-ready code snippets with one-click export.
  • 100% free online tool with zero installation or account requirements.

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