Pretext: Fast DOM-Free Text Height Measurement

Pretext: a JavaScript/TypeScript library for multiline text height measurement and per-line layout. Key features: Measures text height via canvas glyph widths. No DOM reflow Supports RTL scripts, bidirectional text, and emoji out of the box Provides line-by-line iterators for canvas, SVG, and WebGL rendering Variable-width column flow for float-aware text layout TypeScript type definitions included A great pick if you're building virtualized lists, masonry grids, or any custom text renderer that needs pixel-accurate paragraph heights at scale. 👉 Blog Post 👉 GitHub Repo 👉 Live Demo