I built a privacy exposure checker that shows exactly what data your browser leaks to every website you visit.

It detects:

• Canvas and WebGL fingerprints
• Screen resolution, color depth, pixel ratio
• CPU cores and GPU model
• Timezone, locale, and formatting preferences
• Installed fonts
• Battery level and connection type
• WebRTC leak potential

Combined, these create a fingerprint unique to ~99.5% of browsers according to EFF research.

Everything runs locally in the browser. Nothing is transmitted.

Most users score 70+ out of 100 on the exposure scale. Incognito mode has zero effect on the score.

Mitigation: Firefox strict tracking protection + uBlock Origin + disable WebRTC.