# Masonry · Pro

A masonry grid balanced by height: each item goes into the shortest column, items rise in on first paint, and layout animation carries them to new places when the list or column count changes.

This is a Charcoal UI Pro component. Its source and examples are available with a Pro seat: https://charcoalui.com/pricing

## With a Pro seat

1. Add the registry to components.json:

```json
{
  "registries": {
    "@charcoal": {
      "url": "https://charcoalui.com/r/{name}.json",
      "headers": {
        "Authorization": "Bearer ${CHARCOAL_LICENSE_KEY}"
      }
    }
  }
}
```

2. Copy your licence key from https://charcoalui.com/dashboard and put it in .env.local as CHARCOAL_LICENSE_KEY, then:

```bash
npx shadcn@latest add @charcoal/masonry
```

To read Pro source through this MCP server, reconnect it with the header "Authorization: Bearer <licence key>".

## API — Masonry
| Prop | Type | Default | Notes |
| --- | --- | --- | --- |
| `items` | `{ id: string; src: string; height: number; alt?: string; title?: string }[]` | — | height is relative to the column width, as a percentage. |
| `columns` | `number` | `3` | Drops to fewer on narrow containers. |
| `gap` | `number` | `12` |  |
| `stagger` | `number` | `0.04` |  |
| `hoverLift` | `boolean` | `true` |  |
| `onSelect` | `(item) => void` | — |  |
| `className` | `string` | — |  |

See it live: https://charcoalui.com/docs/components/masonry