puppeteer/website/versioned_docs/version-17.0.0/api/puppeteer.launchoptions.extraprefsfirefox.md
release-please[bot] e2d9858b38
chore(main): release 17.0.0 (#8828)
* chore(main): release 17.0.0

* chore: generate versioned docs

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
2022-08-29 11:11:05 +02:00

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---
sidebar_label: LaunchOptions.extraPrefsFirefox
---
# LaunchOptions.extraPrefsFirefox property
[Additional preferences](https://searchfox.org/mozilla-release/source/modules/libpref/init/all.js) that can be passed when launching with Firefox.
**Signature:**
```typescript
interface LaunchOptions {
extraPrefsFirefox?: Record<string, unknown>;
}
```