Security & Privacy
Encryption, hashes, ciphers and key generators — all processed locally.
23 live · 60+ planned
Password Strength Checker
Estimate how strong a password is and how long it would take to crack.
AES Text Encryption
Encrypt and decrypt text with AES-GCM and a password.
MD5 Hash Generator
Generate an MD5 hash from text.
Caesar Cipher Encoder / Decoder
Shift letters by a fixed amount — the classic Caesar cipher.
HMAC Generator
Generate an HMAC signature with a secret key.
Encryption Key Generator
Generate random encryption keys in hex or Base64.
Vigenère Cipher
Encode and decode text with a keyword using the Vigenère cipher.
XOR Cipher
Encrypt text with a repeating-key XOR cipher.
CRC32 Checksum Generator
Compute a CRC32 checksum of text.
Atbash Cipher
Encode text with the Atbash substitution cipher (A↔Z).
ROT47 Encoder / Decoder
Rotate printable ASCII by 47 positions (its own inverse).
A1Z26 Cipher
Convert letters to their alphabet position (A=1 … Z=26) and back.
Rail Fence Cipher
Encode text using the zig-zag rail fence transposition cipher.
Text to Hex Converter
Convert text to hexadecimal.
Hex to Text Converter
Convert hexadecimal back to readable text.
Password Entropy Calculator
Calculate password entropy from length and character set.
PIN Combinations Calculator
Count how many combinations a PIN has.
Baconian Cipher
Encode text with Francis Bacon’s a/b cipher.
Polybius Square Cipher
Encode text as row-column coordinates (I/J combined).
Keyboard Shift Cipher
Shift each letter one key to the right on a QWERTY keyboard.
Hash Identifier
Guess the hash type from its length and format.
Luhn Checksum Validator
Validate a number with the Luhn algorithm (used by card numbers).
Caesar Cipher Brute Force
Show all 25 possible Caesar shifts of a message.