WasmFileHash - File Hash Generator & Checker
Lightning-fast file hash generator and verifier, powered by WebAssembly. Everything runs locally, nothing leaves your device. Formerly FastHash.
Supports a wide range of hashing algorithms and workflows:
- Cryptographic Hash Functions (e.g. BLAKE3, SHA-256, SHA3-512, Keccak-256, BLAKE2s...)
- Legacy Cryptographic Functions (MD4, MD5, SHA-1)
- Non-cryptographic Hash Functions (e.g. XXH3, CRC32, CRC64)
- High-performance hashing with WebAssembly and chunked processing
- Multiple files supported
- Export results to JSON or PDF
- Offline mode: optionally preload all hashing libraries for use without an internet connection from our website
No ads, no telemetry, no files, hashes, or usage data are ever collected or stored.