Can I prevent font fingerprinting?

Firefox resistFingerprinting uses a standardized set. Tor Browser does the same.

Why do software packages affect my fingerprint?

Adobe, Office, and language packs install unique fonts that make your list more distinctive.

Does uninstalling fonts help?

Reducing to system defaults helps but is impractical. Anti-fingerprinting tools are more practical.

How many fonts does the average system have?

Windows: 200-400, macOS: 100-200, Linux: varies. Each extra font increases uniqueness.

Font Fingerprint Detector

Free online font fingerprint detector. See which fonts your browser has installed and how font lists are used as a major tracking vector to fingerprint your device.

Free online font fingerprint detector. See which fonts your browser has installed and how font lists are used as a major tracking vector to fingerprint your device. Open the tool — font detection runs automatically. Review your font fingerprint hash and detected font count. Check which fonts reveal your OS, region, and installed software. Compare your risk level: low, trackable, or highly trackable. Uses HTML5 Canvas text measurement to detect installed fonts. A baseline monospace string is rendered with and without each test font. If the width changes, the font is present. This is the same technique trackers use. No data leaves your browser.