Compute 256-bit (64 hex characters) cryptographic hash checksums for any input string using browser-native Web Crypto APIs.
SHA-256 (Secure Hash Algorithm 256-bit) is a member of the SHA-2 family designed by the NSA and standardized by NIST.
Widely used in digital signatures, SSL/TLS certificates, blockchain verification (Bitcoin), and file integrity verification.
No. SHA-256 is a one-way cryptographic hash function, not an encryption algorithm. It cannot be reversed back to original plaintext.
Never. Hashing runs entirely in your local browser using window.crypto.subtle.digest.
Calculate 32-character hexadecimal MD5 hash checksums for cache busting, database keys, and file integrity verification.
Create cryptographically secure, high-entropy passwords and API secret keys using the Web Cryptography API random number generator.
Generate standard RFC 4122 compliant version 4 UUIDs (Universally Unique Identifiers) for database primary keys, distributed systems, and API tracking.
Decode Base64Url encoded JWTs to inspect authentication headers, payload claims (iss, sub, exp), and verify token expiration in real-time.