# Setting: `app_background_image_url`

- **Constant:** `ConfigInterface::APP_BACKGROUND_IMAGE_URL`
- **Category:** `app`
- **Type:** `image`
- **Required:** no
- **Sensitive:** no
- **Validation:** `string|max:2048`
- **Placeholder / default hint:** `https://example.com/background.jpg`

## Description

Default background image URL for all users (leave empty to use theme defaults)

## Allowed options

_Free-form / no fixed options_

## Change via CLI

```bash
featherpanel saas getsetting app_background_image_url
featherpanel saas setsetting app_background_image_url "<value>"
```

## Change via API

```http
PATCH /api/admin/settings
Content-Type: application/json

{ "app_background_image_url": "<value>" }
```