This tool measures your browser's performance.now() timing resolution.
Modern browsers limit this precision to prevent timing attacks and fingerprinting.
Testing...
Results
Technical Details
Chrome/Chromium: Typically rounds to 100μs (0.1ms) for security
Firefox: Uses more aggressive rounding and jitter to prevent timing attacks
Safari: Similar mitigations with platform-specific implementations
Edge: Follows Chromium behavior in recent versions
Note: This is for educational purposes. High-precision timing can be used
for fingerprinting and side-channel attacks, which is why browsers limit it.