About Lettra.

MIT License, © 2026 joyco.studio. Use, modify and distribute it, commercially too, as long as you keep the copyright notice. No warranty. See the license for exact terms.

Fonts have their own licenses. Lettra’s license doesn’t let you redistribute a third-party font.

• Lettra MIT License

  The license file in the repo.

Lettra puts text in a 3D scene as geometry with shader materials. MSDF atlases keep it sharp at any scale or angle. It can sit between objects, on a screen, or react to input. Lettra does the layout and rendering; the scene is yours.

This site is a set of live Lettra experiments: canopy, falling leaves, lake, floating sheet, televisions. Each keeps HTML text, navigation, reduced-motion support and a fallback.

JOYCO is a design and engineering studio in Buenos Aires. It also publishes other libraries, tools and experiments. For current APIs and limits, see the docs and source.

• Lettra documentation

  Reference, examples and font workflow.

• Lettra source and README

  Source, install and current API.

• Lettra agent skill

  Install the Lettra skill in your agent.

• JOYCO experiments

  More work from the studio.