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Crypto tools

Hashes and digests for text or files, computed entirely in your browser — nothing uploaded.

- Hash generator

SHA-2, SHA-3, Keccak, BLAKE and legacy checksums, for text or files.
 (/crypto/hash)
- Password strength

Score a password with zxcvbn — the guessing model, with matched patterns shown.
 (/crypto/password-strength)
- HMAC

Keyed MACs over text — SHA-1/256/384/512 through WebCrypto, keys as text/hex/base64.
 (/crypto/hmac)
- bcrypt

Hash with bcryptjs cost 4–15 in a disposable worker; verify against a pasted hash.
 (/crypto/bcrypt)

4 tool s · everything is computed locally, nothing leaves your device.

Canonical HTML: https://nutter.tools/crypto
Markdown version: https://nutter.tools/crypto/index.md
Plain-text version: https://nutter.tools/crypto/index.txt
Agent index: https://nutter.tools/llms.txt