# Matte Textarea Input

> A floating-label textarea that auto-grows with its content, shows a live character counter against a max length, and swaps its helper text when the limit is reached. Ported to React from the original HTML/CSS/JS component by SLtowl (sl-ui-library).

- Author: [sltowl](https://21st.dev/@sltowl)
- Library: SLtowl
- License: MIT
- Tags: Textarea, Floating Label
- Live preview: https://21st.dev/@sltowl/components/matte-textarea-input

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/sltowl/matte-textarea-input?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/textarea.md