A command-line tool for searching and analyzing font files based on various criteria.

• Search for fonts based on:
  • OpenType variation axes (e.g., weight, width)
  • OpenType features (e.g., small caps, old-style numerals)
  • OpenType scripts (e.g., Latin, Cyrillic)
  • Font tables (e.g., GPOS, GSUB)
  • Unicode character support
  • Font name patterns
• Progressive output for immediate feedback
• Parallel processing for improved performance
• Output in text or JSON format

cargo install --git https://github.com/simoncozens/fontgrep

# Find variable fonts
fontgrep --variable /path/to/fonts

# Find fonts with specific features
fontgrep -f smcp,onum /path/to/fonts

# Find fonts supporting specific scripts
fontgrep -s latn,cyrl /path/to/fonts

# Find fonts by name pattern
fontgrep -n "Roboto.*Mono" /path/to/fonts

# Find fonts supporting specific Unicode ranges
fontgrep -u "U+0041-U+005A,U+0061-U+007A" /path/to/fonts

# Find fonts with specific tables
fontgrep -T GPOS,GSUB /path/to/fonts

# Find fonts supporting specific text
fontgrep -t "Hello World" /path/to/fonts

# Find variable fonts with small caps feature
fontgrep --variable -f smcp /path/to/fonts

# Find fonts supporting both Latin and Cyrillic scripts
fontgrep -s latn,cyrl /path/to/fonts

# Find fonts with specific name pattern and features
fontgrep -n "Roboto" -f liga,kern /path/to/fonts

# Output in JSON format
fontgrep -j /path/to/fonts

# Combine JSON output with search criteria
fontgrep -j -f smcp,onum /path/to/fonts

• -a, --axes <AXES>: Comma-separated list of OpenType variation axes to search for (e.g., wght,wdth)
• -f, --features <FEATURES>: Comma-separated list of OpenType features to search for (e.g., smcp,onum)
• -s, --scripts <SCRIPTS>: Comma-separated list of OpenType script tags to search for (e.g., latn,cyrl)
• -T, --tables <TABLES>: Comma-separated list of OpenType table tags to search for (e.g., GPOS,GSUB)
• -v, --variable: Only show variable fonts that support OpenType Font Variations
• -n, --name <NAME>: Regular expressions to match against font names
• -u, --codepoints <CODEPOINTS>: Unicode codepoints or ranges to search for (e.g., U+0041-U+005A,U+0061)
• -t, --text <TEXT>: Text string to check for support
• -J, --jobs <JOBS>: Number of parallel jobs to use (defaults to CPU core count)
• --verbose: Enable verbose output
• -j, --json: Output results in JSON format
• -h, --help: Print help information
• -V, --version: Print version information

• Uses memory mapping for efficient font file access
• Employs parallel processing for searching and font analysis
• Provides progressive output for immediate feedback

git clone https://github.com/twardoch/fontgrep.git
cd fontgrep
cargo build --release

cargo test

Contributions are welcome! Please feel free to submit a Pull Request.

This project is licensed under the MIT License - see the LICENSE file for details.

• Uses skrifa for font parsing
• Uses clap for command-line argument parsing
• Uses jwalk for parallel directory traversal