Tokens, passwords & IDs
Inspect tokens, check a breach corpus and generate random passwords, tokens and identifiers.
Explore the tools
5 focused tools, with an explanation and a practical guide for each check.
Data & crypto
← All Data & cryptography toolsJWT inspector & verifier
Decode token claims and verify HS256 or RS256 signatures using a key you supply.
Local analysisData & cryptoPassword breach check
Check the Pwned Passwords corpus using a five-character hash prefix, not your password.
Hash-prefix requestData & cryptoUUID v4 generator
Generate random version-4 UUIDs with the browser’s cryptographic random source.
Local analysisData & cryptoSecure password generator
Generate a password with cryptographic randomness and a selectable character set.
Local analysisData & cryptoRandom token generator
Generate cryptographically random bytes and encode them as hexadecimal or unpadded Base64url.
Local analysis