Language fingerprinting uses your browser's language preferences to help identify you and verify your claimed location.
🔬 Detection Methods
// JavaScript detection
navigator.language // "en-US"
navigator.languages // ["en-US", "en", "de"]
// HTTP Header
Accept-Language: en-US,en;q=0.9,de;q=0.8📊 What It Reveals
- Primary language: Your main browser language
- Language list: All preferred languages in order
- Regional variants: en-US vs en-GB
- Quality values: Preference weights
🎯 Geolocation Correlation
Language settings should match your claimed location. A US IP with Russian language settings is suspicious.
🛡️ Spoofing Languages
Antidetect browsers set language preferences to match the target location and profile configuration.