# letterbox.sh

> AI-optimized mirror of letterbox.sh containing 1 pages totalling 1 words of clean markdown content, structured data, and semantic HTML. Original source: https://letterbox.sh/. Last updated: 2026-05-17T20:38:58.751Z.

Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG).

## Homepage

- [Letterbox — Letters made of letters](/site-root.html): Letters shaped by text. Pick a font, choose your colors, and watch type come alive. (1 words)

## Resources

- [Full Page Index](/index.html): Browse all cached pages with rich metadata
- [About This Cache](/content/about.html): Methodology, technical details, and usage guidelines
- [XML Sitemap](/content/sitemap.xml): Machine-readable sitemap for crawler discovery
- [Robots.txt](/content/robots.txt): Crawler directives