Free online security and privacy tools

Audits PDF files to check whether redacted text is only covered visually and can still be recovered.

Splits a secret message into QR codes so it can be shared and later recovered.

Web-based generator for random passwords and diceware-style passphrases.

Finds and masks personal data such as names and emails in text using Microsoft Presidio.

Generates look-alike domain permutations for a domain and checks which are registered, to spot phishing.

Generates secure diceware passphrases from word lists in the browser.

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

React app that creates secure random passwords and passphrases with length and character options.

Password generator built with WebAssembly that can run in the browser.

Checks whether a face in a photo or camera feed is a live person or a spoof, using passive 3D liveness detection.

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.

Analyzes more than a dozen fingerprinting signals your browser exposes and summarizes the privacy risks.

Computes Keccak-256 hashes, the variant used by Ethereum, from text in several encodings.

Applies SHA-256 twice to the input, as used for Bitcoin-style hashing.