# Math Engine Fingerprint Test

Test JavaScript Math engine precision and detect browser engine differences. Reveals JS engine type and architecture through floating-point behavior.

 

 ### Math Test Results



 computing... 





 

### How Math Engine Fingerprinting Works





  

Tests **floating-point edge cases** where different JS engines produce slightly different results due to implementation details, rounding modes, and architecture (32-bit vs 64-bit).

 

 

 

  

**4-6 bits of entropy**: Engine detection (V8, SpiderMonkey, JavaScriptCore), architecture (32/64-bit), precision anomalies reveal browser family and system configuration.

 

 

 

  

**V8** (Chrome, Edge, Opera, Brave), **SpiderMonkey** (Firefox), **JavaScriptCore** (Safari) - each has unique Math implementation with subtle precision differences.

 

 

 

  

Very difficult to prevent: Math behavior is fundamental to JavaScript. Some privacy browsers randomize results slightly, but this can break legitimate calculations.