WebAssembly Performance Benchmark 2025

May 15, 2025 • 8 min read

Introduction to Performance Testing

Our latest benchmarking suite compares WebAssembly performance against traditional JavaScript execution across a range of mathematical and cryptographic workloads. The test was conducted using the latest stable versions of WebAssembly and JavaScript engines.

Benchmark Results

Detailed Metrics

Operation	WebAssembly	JavaScript	Performance Delta
Matrix Multiplication (512x512)	82ms	284ms	67% increase
SHA-256 Hashing	12MB/s	9.4MB/s	28% increase
FFT 8192pt	31ms	243ms	87% increase

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Conclusion

These benchmarks reinforce WebAssembly's position as a high-performance alternative to traditional JavaScript for compute-heavy tasks. While JavaScript continues to make gains, WebAssembly remains 25-80% faster across all tested categories.

What's Next?

Optimization of WebGPU integration
SIMD instruction set improvements
New garbage collection strategies