High-Performance Commercial Native Suite

TTF/OTF Glyph Subsetter & Brotli WOFF2 Web Font Shrinker

Drastically cut web font file sizes by up to 90% with surgical TTF/OTF glyph subsetting, unused table stripping, and Brotli WOFF2 compression.

Buy Lifetime License ($19.99) Test Live Engine Demo

Competitor Comparison Why FontSubsetter Is Cheaper & Better

Save $80+ vs TransType ($99) / Monotype FontPrep Cloud

Traditional Alternative:

TransType ($99) / Monotype FontPrep Cloud

$99 one-time or cloud API subscriptions

Sluggish font conversion, expensive single-seat licensing, lacks automated unicode-range CSS generation

Vivian Commercial Engine:

$19.99 One-Time Perpetual

100% Offline Air-Gapped C++17

One-time $19.99 perpetual license, instant Brotli WOFF2 compression, automatic CSS generator, zero bloat

Native Desktop Application • Real GTK3 Program Screens

Live Compiled Binary Technical Wiki →

Core Engine Capabilities

Reduces font payload by up to 90% by discarding unused glyph ranges
Lossless Brotli WOFF2 compression encoding
Strips proprietary metadata, kerning anomalies, and dead OpenType tables
Command-line mode integrates into CI/CD static site builds

Dual GUI & Console Interface

Designed for automated batch pipelines and power users alike. Features a high-performance native desktop GUI (GTK3 on Linux / Win32 on Windows) alongside a headless command-line interface with scriptable switches.

# Run native desktop GUI:

./fontsubset --gui

# Headless batch processing:

./fontsubset --subset-sample

Interactive Engine Testbed

Microsecond Benchmarking

Test the live commercial engine execution in your browser through Cloudflare Cloud Platform:

Click 'Execute Engine Test' to dispatch benchmark telemetry...

Perpetual Commercial License

$19.99 / one-time

Dual Linux x86_64 & Windows Binaries
Native GUI + Headless Console CLI
Node-Locked Ed25519 License Key (2 Seats)
Free Minor Updates & Cloudflare Edge Access