# Portal Field

> An animated ambient WebGL background with glowing organic arcs, rendered as a sandboxed iframe you can tune for speed, size, hue, saturation and brightness.

- Author: [Meng To](https://21st.dev/@mengto)
- Library: [ThreeUI](https://21st.dev/@mengto/library/threeui)
- License: MIT
- Tags: Background, WebGL, Shader, Ambient, Three.js
- Live preview: https://21st.dev/@mengto/components/portal-field

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/mengto/portal-field?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/background.md