> For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt.

# output.ssgByEntries

- **Type:** `Record<string, boolean | object>`
- **Default Value:** `undefined`

Configure SSG per entry for multi-entry applications.

:::info

- Use `output.ssg` for single-entry apps.
- For multi-entry apps, prefer `output.ssgByEntries`.
- If `output.ssg` is `true` and `output.ssgByEntries` is not set, all routes under all entries are treated as SSG routes.

:::

## Configuration Type

```ts
type SSGRouteOptions =
  | string
  | {
      url: string;
      headers?: Record<string, any>;
    };

type SSGOptions = {
  headers?: Record<string, any>;
  routes?: SSGRouteOptions[];
};

// ssgByEntries type
type SSGMultiEntryOptions = Record<string, boolean | SSGOptions>;
```

## Examples

### Enable SSG for some entries

```ts title="modern.config.ts"
export default defineConfig({
  output: {
    ssgByEntries: {
      home: true,
      admin: false,
    },
  },
});
```

### Configure routes per entry

```ts title="modern.config.ts"
export default defineConfig({
  output: {
    ssgByEntries: {
      home: {
        routes: ['/', '/about', '/user/modernjs'],
      },
      admin: {
        routes: ['/', '/dashboard'],
      },
    },
  },
});
```

### Configure headers per entry or route

```ts title="modern.config.ts"
export default defineConfig({
  output: {
    ssgByEntries: {
      home: {
        headers: {
          'x-tt-env': 'ppe_modernjs',
        },
        routes: [
          '/',
          {
            url: '/about',
            headers: {
              from: 'modern-website',
            },
          },
        ],
      },
    },
  },
});
```