# Thumbed Edge

> A scroll-synced table of contents that draws a long document's sections as the worn fore-edge of a book, darkening the parts you read most and dropping a ribbon marker where you left off last time.

- Author: [ham7a311](https://21st.dev/@ham7a311)
- Library: ham7a311
- License: MIT
- Tags: Table of Content, Table of Contents, Scrollspy, Navigation, Reading Progress
- Live preview: https://21st.dev/@ham7a311/components/thumbed-edge

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/ham7a311/thumbed-edge?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/table-of-content.md