Zero-Reflow Text Layout
Pure JavaScript multiline text measurement & layout without DOM reflow.
Uses canvas measureText internally, caches widths, then does pure arithmetic for layout.
Microsecond-fast layout calculations enable animations and interactions impossible with traditional CSS.
Move your cursor through the text — watch it flow around in real-time at 60fps
Left: CSS max-width (wasted space in red). Right: Pretext shrink-wrapped to perfection.
500+ cards with variable text. Heights predicted instantly, only visible cards rendered.
Proportional character widths aligned pixel-perfect using Pretext measurement.
Click to make letters fall with gravity. Click again to explode and reassemble.
Type anything — Chinese, Arabic, Hebrew, emoji, mixed scripts. See real-time measurements.