- Bcrypt & Argon2 HasherHash and verify passwords with bcrypt, argon2, and scrypt, entirely in your browser.bcrypt generatorbcrypt onlineverify bcrypt hashargon2id
- Certificate DecoderDecode PEM or DER X.509 certificates to read expiry, SANs, issuer, fingerprints, and chain order.x509 decoder
- Hash & ChecksumHash text or files with MD5, SHA-1, SHA-256, SHA-384, and SHA-512 at once, and verify the result against a known hash.hash generatormd5 generatorsha256 checksumsha1 hash
- Hash IdentifierWork out which algorithm likely produced an unknown hash, ranked by likelihood.hash identifierwhat hash is thisidentify hash type
- JWT Vulnerability CheckDecode a JWT and test it for alg=none and weak HMAC signing secrets, entirely in your browser.jwt vulnerabilityjwt alg nonejwt weak secretdecode jwt
- OAuth Scope DecoderTurn an OAuth scope list into plain English access and an honest risk read.
- Passkey TesterRegister and authenticate passkeys, then decode the attestation object, flags, and public key.passkey testerwebauthn debuggeraaguid lookupcose key viewer
- Password GeneratorGenerate random passwords or EFF diceware passphrases in your browser, each one reported with its exact entropy in bits and a crack-time estimate.password generatorrandom passworddicewarestrong password
- TOTP GeneratorGenerate live two-factor authentication codes from a Base32 secret or an otpauth:// URI.totp generator2fa code generatorotpauthrfc 6238
- HMAC GeneratorCompute and verify HMAC digests for a message and a secret key, in your browser.hmac generatorhmac sha256 onlinehmac calculator
- JWT GeneratorBuild, sign, and verify JSON Web Tokens with HS256, RS256, or ES256 locally.jwt generatorsign a jwt onlinejwt buildercreate jwt token
- Password Strength CheckerScore a password's real entropy and crack time, with plain English reasons, on your device.zxcvbn online
- Self-Signed Certificate GeneratorGenerate a self-signed X.509 certificate and private key for local development, in your browser.
- SSH Key GeneratorGenerate an Ed25519 or ECDSA SSH key pair in your browser, with fingerprint and PEM export.ssh key generatorssh keygen onlineecdsa ssh key
- Text EncrypterEncrypt and decrypt text with a passphrase using AES-256-GCM, entirely on your device.text encrypteraes gcm encrypt