Free online security and privacy tools

Hashes typed text or an uploaded file with MD5 in the browser.

Computes SHA-1 digests of text or a file locally in the browser.

Calculates the SHA-256 checksum of a local file without uploading it.

Hashes text or files with the SHA3-256 algorithm in the browser.

Computes SHA-512 digests of text or a file locally in the browser.

Hashes text or files with SHA-256 or HMAC-SHA-256 and accepts several input encodings.

Demo of the zxcvbn estimator that scores a password and lists the patterns and guesses it found.

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

Collection of password tools, including strength checking, generation and breach lookups.

Random password generator in plain JavaScript with no cookies or trackers.

Open source web app that stands in for a password manager without storing your passwords.

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.

Client-side generator for passwords, API keys, UUIDs, JWT secrets and encryption keys.

Creates random passwords or passphrases with adjustable length and character rules.

Rates a password and estimates how long a brute-force attack would take.

Encodes and decodes the Beaufort cipher.

Analyses ciphertext and suggests which type of cipher produced it.

Encodes and decodes columnar transposition ciphers.

Encodes and decodes four-square digraph ciphers.

Charts letter frequencies in a text to help break ciphers.

Translates Morse code to text and text to Morse code.