Caesar shifts ROT13 ROT47 ROT5 / ROT18 Bacon’s cipher Vigenère Rail Fence Reverse Atbash Binary Morse Hex Base64 Base32 Base58 Base85 URL percent encoding HTML entities Decimal ASCII Octal ASCII Unicode numbers 7-bit binary Reversed binary bits Affine cipher Polybius square / Tap code Braille text codes A1Z26 numbers A1Z26 number offsets A1Z26 then Caesar shifts Pattern fill (_ blanks) Keyboard shift Keyboard mirror Keyboard row shifts Columnar transposition First letters of words Word letter columns Capital letters only Word diagonal English-word check