Free online security and privacy tools

Chains encoders, decoders and ciphers in a modular pipeline, with conversions running in the browser.

Encrypts files and splits the key among trusted people so a chosen number must combine shares to open them.

Browser-based 2FA code generator offered as an alternative to authenticator phone apps.

Single-file web page that produces TOTP codes from your secret without an account.

Encodes and decodes the affine cipher with chosen coefficients.

Encodes and decodes with a custom alphabet substitution.

Encodes and decodes Bacon cipher text.

Decodes Base64 strings into readable text.

Converts binary digits to text as you type.

Encodes and decodes Caesar shift ciphers and updates as you type.

Online Enigma machine simulator with rotor, ring and plugboard settings.

Encodes and decodes ROT13 text.

Encodes text as bytes in binary, hex or decimal.

Encrypts and decrypts text with a Vigenere keyword.

Detects and masks personal information in text, running locally in your browser.

Computes an HMAC-SHA256 signature for a message and secret key in the browser.

Creates random HS256, HS384 and HS512 signing secrets for Node, Python and Java apps.

Creates passwords on the device with the Web Crypto API, with an easy-type mode and a maximum-security mode.

XORs text with a passphrase to scramble and unscramble it in the browser.

Hashes input with Argon2 using tunable memory, time and parallelism.

Hashes input with bcrypt using configurable rounds.

Neutralises URLs so they are not clickable when shared in reports.

Identifies a file's type from its byte signature.

Measures the Shannon entropy of data to hint at encryption or compression.