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id: largeTitle-options
title: Large Title Options
sidebar_label: Large Title
---
Controls the top bar large title on iOS, available on iOS 11 and above.
```js
const options = {
  topBar: {
    largeTitle: {}
  }
};
```
### `visible`
Controls whether the large title is visible or not.
| Type    | Required | Platform |
| ------- | -------- | -------- |
| boolean | No       | iOS      |
### `fontSize`
Set the title font size. On Android this value is in `sp`.
| Type   | Required | Platform |
| ------ | -------- | -------- |
| number | No       | iOS      |
### `color`
Large title text color.
| Type  | Required | Platform |
| ----- | -------- | -------- |
| Color | No       | iOS      |
### `fontFamily`
Set the large title [FontFamily](fonts.mdx).
| Type       | Required | Platform |
| ---------- | -------- | -------- |
| FontFamily | No       | iOS      |
### `fontWeight`
Set the font weight for the large title.
| Type   | Required | Platform |
| ------ | -------- | -------- |
| number | No       | iOS      |
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