Browser Font Size Diagnostics

This tool helps diagnose differences in font rendering and sizing between browsers. Compare information across browsers to identify discrepancies.

Browser Information

Browser
Version
Platform
User Agent

Display Properties

Device Pixel Ratio
Viewport Width
Viewport Height
Zoom Level (Estimated)

Default Font Settings

Root Font Size (<html>)
Body Font Size
Body Line Height
Body Letter Spacing
DPI/PPI (Estimate)
1rem / 1vw / 1vh