nutrient-font-tool

Generate fonts.json metadata for Nutrient PDF SDK font bundles.

📖 Guide: Dynamic Font Loading in Nutrient Web SDK

Installation

# Run directly (no install needed)
npx @nutrient-sdk/font-tool create ./my-fonts

# Or install globally
npm install -g @nutrient-sdk/font-tool

Usage

# Generate fonts.json inside the font directory
nutrient-font-tool create ./my-fonts
# → ./my-fonts/fonts.json

# Specify custom output path
nutrient-font-tool create ./my-fonts -o ./output/fonts.json

# Pretty-print the JSON
nutrient-font-tool create ./my-fonts --pretty

The tool recursively scans the input directory for font files.

Options

Option	Description
-o, --output <file>	Output file (default: <input-dir>/fonts.json)
--pretty	Pretty-print JSON output

Supported Formats

• .ttf - TrueType
• .otf - OpenType
• .ttc - TrueType Collection
• .otc - OpenType Collection

Output

Generates a fonts.json file with font metadata:

{
  "v": 1,
  "availableFonts": [
    {
      "name": {
        "family": "Noto Sans",
        "fullName": "Noto Sans Regular",
        "subfamily": "Regular"
      },
      "filePath": "NotoSans-Regular.ttf",
      "codePoints": [[32, 126], [160, 255], ...],
      "sha1": "abc123...",
      "allowedToEmbed": true,
      "weight": 5
    }
  ]
}

Requirements

• Node.js 18+

Learn More

• Dynamic Font Loading Guide — How to use custom font bundles with Nutrient Web SDK
• Nutrient Web SDK — PDF SDK for web applications

License

MIT