AIToolly product video
Pretext - Text measurement that never touches the DOM.
Pretext.js es un motor de diseño de texto puro en JavaScript y TypeScript que elimina el 'layout thrashing' mediante aritmética pura. Desarrollado por Cheng Lou, permite medir y posicionar texto multilínea sin recurrir a getBoundingClientRect o reflows, ofreciendo un rendimiento hasta 500 veces superior al método tradicional del navegador.
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Text measurement without touching the DOM.
Meet Pretext, built for complex, text-heavy interfaces.
It lays out 1,000 blocks for a clear performance demonstration.
Measure once, then lay out forever.
Pretext compares traditional DOM measurement with a Canvas-based approach.
It uses real font metrics and supports multilingual text by design.
With zero DOM reads, it targets performance-critical cases.
TypeScript-native, dependency-free, and built around reusable prepared handles.
Try Pretext today and explore what developers are building.
