System

Language Preferences

User language settings

Live Playground

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API Docs

Endpoint

GET /api/fingerprint/languages

Examples

About

Language preferences fingerprinting enumerates navigator.languages array revealing user language rankings and locale preferences. The order of languages is highly distinctive: primary language indicates user's native language or primary region, secondary languages reveal bilingual capabilities or regions lived in, and rare language combinations create unique fingerprints. For example, ['en-US', 'zh-CN', 'ja-JP'] suggests a multilingual user in tech, ['es-419', 'en-US'] indicates Hispanic American, ['ar-SA', 'en-GB'] suggests Middle Eastern user educated in UK. This data correlates with timezone, keyboard layout, and system fonts to create geographic and cultural profiles. Corporate or institutional language settings can be detected. The array order is stable per user.

Use Cases

•Locale detection
•Content personalization
•Geographic profiling
•Cultural background inference

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Core pages

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