pretext

An open textbook for Discrete Mathematics, as taught at the University of Northern Colorado

Predict React Native text heights before rendering. Native TextKit/TextPaint measurement + ~0.0002ms JS layout. FlashList, streaming AI chat, typewriter, pinch-to-zoom, obstacle reflow, Dynamic Type, Expo Web. 386 tests. MIT.

Open-Source Collection of Social Engineering Pretexts

LayoutSans - Pure TypeScript 2D flex/grid layout engine powered by Pretext. Zero DOM. Zero WASM. Gives exact pixel positions for any flex/grid tree. Full canvas text interaction: selection, copy, Ctrl+F search, hyperlinks, and screen-reader a11y. Runs everywhere (Node, Bun, Deno, Workers, browser).

A curated list of demos, community projects, tips, tutorials, and news for @chenglou/pretext — the 15KB DOM-free text layout engine that's 500x faster than browser layout

Universal text preparation and line layout for any SkiaSharp-based UI, with grapheme-aware wrapping, locale-aware segmentation, bidi support, and streaming line walking.

Pure JavaScript/TypeScript CSS layout engine — no browser DOM required

Bad Apple!! Rendering using Cheng Lou's Pretext library

Curated ecosystem list for projects built on Pretext, with live demos and community examples.

The Community Tweet Wall — a curated, newspaper-style wall of tweets from the community.

PDF document builder & npm library with pixel-perfect text wrapping. Powered by Pretext.

Embed anything in text, now without the geometry code. The missing abstraction layer for @chenglou/pretext. One function call to flow text around circles, rectangles, ellipses, and polygons at 60fps.

Discrete Math for Shockers - textbook for Math 321 at Wichita State University

High-performance text controls for Avalonia, powered by PretextSharp and Skia.

A Python rewrite of chenglou/pretext — fast, accurate, and concise text measurement and layout.

Multi-CLI skill bundle and npm CLI for Pretext-driven text layout, typography, and frontend motion.

React hook that replaces measureElement with canvas-based text measurement for @tanstack/react-virtual, eliminating layout reflow during scroll.

Realistic browser fishing game. Dynamic weather, lifelike fish behavior, and real physics. Every cast, every catch is pure skill and strategy.

An article introducing you to fundamentals concepts of programming.