Generate MD5, SHA1, SHA256 hashes
A cryptographic hash function maps arbitrary input to a fixed-length fingerprint. Hashes are deterministic (same input → same hash) and one-way (you can't invert them). They're the foundation of digital signatures, file integrity verification, password storage, and content-addressable systems like Git. This tool exposes the four most common hashes — MD5, SHA-1, SHA-256, SHA-512 — with a real, RFC-compliant MD5 implementation (not the fake hash some online tools ship).
No. MD5 has been cryptographically broken since 2004 — use bcrypt, scrypt, or Argon2 for passwords. MD5 is fine for non-security checksums (file integrity, caching keys).
SHA-1 produces a 160-bit digest and is also considered broken for collision resistance. SHA-256 produces 256 bits and is the current safe default for general hashing.
No. Hashing runs in your browser using the Web Crypto API for SHA variants and a local RFC 1321 implementation for MD5.
Usually a newline difference — some CLIs add a trailing newline. Also check character encoding; this tool hashes UTF-8 bytes.
This version supports text input. File hashing is on the roadmap and will arrive in a later update.
