Built a project showcase and interactive playground for the Pretext text measurement library

Pretext is a pure JS text measurement algorithm that went viral recently (17M+ views on X). I built pretextwall.xyz to collect community projects using it and to let people try it hands on.

The playground has three interactive React demos:

• Shrink wrap: binary search for the tightest text container width
• Obstacle flow: drag shapes around and watch text reflow in real time using Canvas
• Line inspector: visualize individual line positions and measurements

Built with TanStack Start and deployed on Cloudflare Workers. The tweet embeds use react-tweet.

Happy to answer any questions about the stack or the Pretext integration.