An interactive font specimen viewer, Unicode glyph coverage inspector, and side-by-side typeface comparison utility for Linux. A lightweight Linux alternative to NirSoft WinFontView for inspecting installed system fonts, user typefaces, and standalone TrueType or OpenType font files.

Key features:

• Enumerates all installed system and user font families with styles, weights, scalability, pitch classification (monospace vs proportional), and supported writing scripts.
• Renders live multi-size waterfall specimens (10pt to 64pt) with customizable pangrams, baseline metric overlays, and real typographic ascent/descent/line-spacing measurements.
• Displays an interactive Unicode character glyph grid with per-block codepoint coverage percentages and UTF-8 / Unicode metadata inspection.
• Compares multiple typefaces side-by-side at matched point sizes and loads external .ttf / .otf files on demand without permanent installation.
• Exports high-resolution PNG specimen sheets as well as CSV and JSON font inventory catalogs.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by NirSoft.