Data & cryptography
Verify tokens and files, inspect sensitive traffic and encrypt with care.
A tool for each question.
14 focused tools. Choose a module and follow the evidence.
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.
Encrypted file vault
Encrypt or decrypt a file using AES-256-GCM with a password-derived key and authenticated metadata.
Text hash calculator
Compute SHA-256, SHA-384 or SHA-512 over the exact UTF-8 bytes of your text.
HMAC generator
Calculate an HMAC over exact UTF-8 text using a secret key and a SHA-2 algorithm.
Tokens, 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.
Password breach check
Check the Pwned Passwords corpus using a five-character hash prefix, not your password.
UUID v4 generator
Generate random version-4 UUIDs with the browser’s cryptographic random source.
Secure password generator
Generate a password with cryptographic randomness and a selectable character set.
Random token generator
Generate cryptographically random bytes and encode them as hexadecimal or unpadded Base64url.
Data 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.
Base64 text encoder
Encode UTF-8 text to Base64 or decode Base64 back to valid UTF-8 text.
Hexadecimal text encoder
Convert UTF-8 text to hexadecimal bytes and decode valid hexadecimal back to text.
JSON validator & formatter
Validate a JSON document, inspect its structure and download a consistently formatted copy.
Timestamp converter
Convert Unix seconds, Unix milliseconds or a strict ISO timestamp into UTC and local time.
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