Launch options

locale

Browser locale(s).

Use it for: Localisation checks and geo work: the site sees the language you choose in navigator.languages, Accept-Language and number and date formats. Leave it unset to follow the proxy's country.

Browsers: Camoufox.

Details

• Type: string | array
• Default: derived from the proxy's exit IP
• Example: {"locale":"en-US"}

The first locale drives navigator.language and the Intl API, e.g. "en-US", or a list / comma-separated string of several. Leave it unset to match the proxy's country automatically (with geoip).

An unknown locale fails the launch.

Used in

• Case 74: Does the browser agree with its IP? Timezone, language and WebRTC through exits in three countries
• Case 20: Three visitors, one thread: browser contexts instead of sessions
• Case 15: Three countries, one script — and reading values the way the site does
• Case 4: A German Windows persona with Camoufox — and the one setting that broke it
• Case 9: Setting a header the wrong way: header order as a fingerprint
• Camoufox with a Windows fingerprint
• Camoufox with your own full fingerprint

All options: launch options.