Midjourney engineer debuts open source Pretext to revolutionize web design

Cheng Lou released Pretext, an MIT-licensed 15KB TypeScript library that moves multiline text layout out of the DOM.

Pretext uses Canvas font metrics and arithmetic to predict character and line placement without touching DOM nodes.

Project benchmarks claim layout() processes 500 texts in ~0.09ms, a reported 300–600x speedup over DOM reads.

Within 48 hours the project received over 14,000 GitHub stars and 19 million views on X.