> For the complete documentation index, see [llms.txt](https://developers-apps-in-toss.toss.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers-apps-in-toss.toss.im/documentation/api-and-sdk-en/common/screen/open-url.md).

# Open external URL

`openURL` This function is a utility that lets you open a specified URL in the device's default browser or a linked app. This function internally uses React Native's [`Linking.openURL`](https://reactnative.dev/docs/0.72/linking#openurl)internally.

**Signature**

```typescript
function openURL(url: string): Promise<any>;
```

**Parameters**

* **url** · Required · `string`

  The external web address or deep link path you want to open.

**Return value**

* `Promise<any>`

  Returns a Promise that resolves when the URL is successfully opened.

**Example**

**Open an external website**

{% tabs %}
{% tab title="tsx\[React]" %}

```tsx[react]
import { openURL } from '@apps-in-toss/web-framework';

function Page() {
  const handlePress = () => {
    openURL('https://google.com');
  };

  return (
    <button onClick={handlePress}>
      Open Google website
    </button>
  );
}
```

{% endtab %}

{% tab title="React Native" %}

```tsx
import { openURL } from '@granite-js/react-native';
import { Button } from 'react-native';

function Page() {
  const handlePress = () => {
    openURL('https://google.com');
  };

  return <Button title="Open Google website" onPress={handlePress} />;
}
```

{% endtab %}
{% endtabs %}

**Open a deep link**

{% tabs %}
{% tab title="tsx\[React]" %}

```tsx[react]
import { openURL } from '@apps-in-toss/web-framework';

openURL('intoss://{appName}');
```

{% endtab %}

{% tab title="React Native" %}

```tsx
import { openURL } from '@granite-js/react-native';

openURL('intoss://{appName}');
```

{% endtab %}
{% endtabs %}

### Notes

* If an external URL cannot be opened (e.g., invalid scheme, network blocked), the Promise may be rejected.
* In a WebView environment, a browser tab opens in a new window, and in the default app, it switches to an external app or browser.


---

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