📱 Responsive Text Tester

Test how text responds to different screen sizes and containers. Perfect for responsive typography design.

Sample Text

Font Settings

Font:

Weight:

Line Height:

Viewport Size

Text Preview

The quick brown fox jumps over the lazy dog. This text demonstrates how typography responds to different screen sizes and containers.

Current: 1200px × 800px Font size: 16px

Responsive Options

Auto-scale font size Show grid overlay Show breakpoints Fluid typography

About Responsive Typography

Viewport units (vw, vh) allow text to scale based on the viewport size, creating truly responsive typography that adapts to any screen.

Fluid typography uses CSS calc() and clamp() to create smooth scaling between minimum and maximum font sizes across different viewport widths.

Use relative units, maintain readable line lengths (45-75 characters), and ensure sufficient contrast for accessibility across all sizes.