# Matte Attachment input

> Choose one local document, validate its size and extension, and remove it without uploading anything. Includes White, Black and Blue palettes, with the approved SL UI Library presentations and local interactive demos.

- Author: [SL](https://21st.dev/@sltowl)
- Library: SLtowl
- License: mit
- Tags: Input, Animated
- Live preview: https://21st.dev/@sltowl/components/matte-inputs-attachment-v11

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/sltowl/matte-inputs-attachment-v11?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/input.md