Data & cryptography
Verify tokens and files, inspect sensitive traffic and encrypt with care.
Tools by subcategory
14 focused tools, with an explanation and a practical guide for each check.
Hashing, encryption & integrity
Compare file checksums, encrypt files, hash text and calculate HMACs.
File integrity verifier
Compute SHA-256, SHA-384 or SHA-512 for a file and compare an expected checksum.
Local analysisData & cryptoEncrypted file vault
Encrypt or decrypt a file using AES-256-GCM with a password-derived key and authenticated metadata.
Local analysisData & cryptoText hash calculator
Compute SHA-256, SHA-384 or SHA-512 over the exact UTF-8 bytes of your text.
Local analysisData & cryptoHMAC generator
Calculate an HMAC over exact UTF-8 text using a secret key and a SHA-2 algorithm.
Local analysisTokens, passwords & IDs
Inspect tokens, check a breach corpus and generate random passwords, tokens and identifiers.
JWT 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 analysisData formats & archives
Inspect HAR files, validate JSON and convert encoded text or timestamps.
HAR privacy auditor
Inspect a network archive for third-party hosts, credential-shaped fields and insecure requests.
Local analysisData & cryptoBase64 text encoder
Encode UTF-8 text to Base64 or decode Base64 back to valid UTF-8 text.
Local analysisData & cryptoHexadecimal text encoder
Convert UTF-8 text to hexadecimal bytes and decode valid hexadecimal back to text.
Local analysisData & cryptoJSON validator & formatter
Validate a JSON document, inspect its structure and download a consistently formatted copy.
Local analysisData & cryptoTimestamp converter
Convert Unix seconds, Unix milliseconds or a strict ISO timestamp into UTC and local time.
Local analysis