FontViewer — a Seer Plugin for Previewing Fonts

FontViewer is a fast, native font preview plugin for Seer — the original and fastest Quick Look tool for Windows. Seer pioneered instant file preview on the platform, and FontViewer extends it so you can preview font files with zero lag: drop any font into Seer and instantly see a full glyph table, inspect per-character metrics, preview sample text, and browse metadata — no heavy font manager needed.

Features

• Quick font preview in Seer — press Space on any .ttf, .otf, .woff, .woff2, .ttc, or .otc file
• Glyph table showing every Unicode codepoint the font covers
• Glyph Inspector with per-glyph metrics: advance width, bounding box, left/right bearings, and a visual preview with annotated guide lines
• Sample text rendering with editable pangram presets at any point size
• OpenType name table — copyright, family, subfamily, designer, license, and more
• Font metrics — ascent, descent, line gap, units-per-em
• Copy as image and Save as SVG
• Dark and light theme support matching Seer's appearance
• Remembers your last-used text, size, and layout preferences

The Fastest Font Preview on Windows

Seer is the first and fastest Quick Look tool on Windows — it brought instant file preview to the platform before anyone else. Press Space on any file and get an immediate preview with no startup delay. FontViewer brings that same speed to font files, making it the best way to browse and inspect fonts on Windows without launching a resource-heavy editor.

Screenshots

Building and Running

Requirements: Qt 6.8, CMake 3.16+.

1. Clone the Repository

   git clone --recursive https://github.com/ccseer/FontViewer.git
   cd FontViewer

2. Build

   cd src
   cmake -B build
   cmake --build build

   This produces two outputs:

   • fontviewer.dll — the Seer plugin
   • test_fontviewer.exe — standalone viewer for testing

3. Install the plugin

   Copy fontviewer.dll to your Seer plugins directory.

Seer Plugin

FontViewer is a file preview plugin for Seer — the original and fastest Quick Look tool for Windows.

• Supports previewing .ttf, .otf, .woff, .woff2, and other font formats
• Displays full glyph table, metadata, and Unicode coverage
• Renders sample text with the selected font at configurable sizes
• Built as a native DLL plugin for Seer 4.0.0+

Visit 1218.io to download Seer and learn more about the plugin ecosystem.