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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [LaunchOptions](./puppeteer.launchoptions.md) &gt; [env](./puppeteer.launchoptions.env.md)

## LaunchOptions.env property

Specify environment variables that will be visible to the browser.

<b>Signature:</b>

```typescript
env?: Record<string, string | undefined>;
```
