opentype.js
A JavaScript library for parsing, manipulating, and generating OpenType and TrueType fonts.
What is opentype.js?
opentype.js is a JavaScript library that parses, manipulates, and generates OpenType and TrueType fonts. It allows developers to read font files, extract glyph data, create custom fonts from scratch, and render text as scalable vector paths. It solves the problem of programmatically working with complex font formats in web and Node.js applications.
Frontend developers, creative coders, and designers building typography tools, font editors, or custom text rendering pipelines in JavaScript environments.
Developers choose opentype.js for its comprehensive support of OpenType features (including variable and color fonts), its pure JavaScript implementation that works across browsers and Node.js, and its low-level API that provides fine-grained control over font data.
Overview
Read and write OpenType fonts using JavaScript.
Use Cases
Best For
- Building custom font editors or typography design tools in the browser
- Generating dynamic text graphics or logos with precise font control
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