Overview / Cryptographic Hash & HMAC
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Cryptographic Hash & HMAC

Compute SHA checksums of text or files, or sign with HMAC secrets for webhooks and API authentication.

⚡ All hashing is performed natively by your browser's hardware-accelerated SubtleCrypto API.

SHA Digests

SHA-1
SHA-256
SHA-384
SHA-512

⚠️ SHA-1 is cryptographically broken against collision attacks; always prefer SHA-256 or SHA-512 for security and integrity verification.