# Matte Metric Display

> A dark matte metric card that shows a headline number with an animated sparkline and trend, with segmented buttons to switch the comparison period (7/30/90 days). Ported to React from SL UI Library's vanilla HTML/CSS/JS "data display" component (MIT, credit SLtowl).

- Author: [sltowl](https://21st.dev/@sltowl)
- Library: SLtowl
- License: MIT
- Tags: Metric Card, Sparkline, Analytics, Dashboard, Stat Card
- Live preview: https://21st.dev/@sltowl/components/matte-metric-display

## Install

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