Your digital toolbox

Calculate CRC-16, CRC-32, and Modbus CRC checksums for data integrity verification.

Generate one or many random UUID v4 values, and validate or inspect existing UUIDs.

Encrypt and decrypt text with AES, 3DES or DES using the key and cipher mode you choose.

Generate MD5, SHA-1 and SHA-2 hashes from text, hex or Base64 input.

Generate and verify HMAC codes for a message using a shared secret key.

Generate cryptographically secure random bytes for keys, IVs, nonces and salts.

Inspect RSA, ECDSA and Ed25519 keys and convert them between the PEM and JWK key formats.

Generate RSA, ECDSA or Ed25519 key pairs, sign and verify messages, and encrypt or decrypt with RSA-OAEP.

Format, validate, beautify, and minify JSON data.

Encode text to Base64 or decode Base64 back to text.

Convert UTF-8 text to hexadecimal (Base16) bytes and decode hex back into text.

Percent-encode or decode text for URLs in component, full-URI or form-data mode.

Format and validate YAML, including multi-document files, and convert it to or from JSON.

Format and validate TOML configuration files and convert them to or from JSON.

Format, minify and validate XML, and convert it to or from JSON.

Test a regular expression against your text and inspect each match and capture group.

Decode a JSON Web Token to read its header, payload, claims and expiration time.

Generate strong random passwords or memorable passphrases and see how much entropy they have.

Convert Unix timestamps to UTC, ISO 8601 or local date and time, and back again.

Check a cron expression, get a plain-language explanation and see its next run times.