Free online security and privacy tools

Encodes and decodes Playfair ciphers.

Encodes and decodes rail fence ciphers with a chosen number of rails.

Solves substitution ciphers with frequency tools and manual guesses.

Encodes and decodes Vigenere ciphers and helps guess the key.

Tests what the browser Geolocation API reveals when permission is granted.

Encrypts and decrypts Caesar and ROT13 text with step explanations.

Applies a simple columnar transposition cipher and shows the grid.

Walks through RSA key generation, encryption and decryption with small numbers.

Converts between text, ASCII codes, hex and binary.

Converts text to binary code and decodes binary back to text.

Translates text to Braille and Braille back to text.

Suggests which cipher or code a message may use from its pattern.

Converts Manuel de Codage text to Egyptian hieroglyph signs.

Counts letter and n-gram frequencies in a text for code breaking.

Computes the index of coincidence of a text to guess a cipher type.

Encodes and decodes Morse code with options for dot and dash symbols.

Spells out text using NATO phonetic alphabet words and decodes them.

Transliterates between Latin letters and Devanagari Sanskrit script.

Translates text to semaphore flag positions and back.

Encodes and decodes monoalphabetic substitution ciphers and helps break them.

Produces PBKDF2-SHA256 (Django) and bcrypt (Laravel) hashes of a password for database seeding.

Send a message to a test address to see DKIM, SPF and SpamAssassin results.

Shows fresh high-entropy random strings each page load, ready to copy as passwords or keys.

Gives a temporary inbox address instantly with no sign-up, for receiving sign-up confirmations.