Encoding / Decoding
24 tools available
A1Z26 Cipher
Encode and decode text using the A1Z26 cipher (A=1, B=2, ... Z=26). Configurable separator with letter-number mapping reference.
ASCII85 Encoder / Decoder
Encode and decode ASCII85 (also called Base85/btoa). Supports Adobe, Z85, and RFC 1924 variants. Used in PostScript, PDF, and git binary patches.
Atbash Cipher
Encode and decode text using the Atbash cipher, which reverses the alphabet (A becomes Z, B becomes Y, etc.). The same operation encodes and decodes since it is its own inverse.
Bacon Cipher
Encode and decode text using Francis Bacon's cipher. Supports both the standard 24-letter alphabet (I/J and U/V combined) and the distinct 26-letter variant.
Base32 Encoder/Decoder
Encode and decode text using RFC 4648 Base32 encoding
Base58 Encoder / Decoder
Encode and decode text using Base58 (Bitcoin alphabet) with BigInt arithmetic
Base64 Encoder/Decoder
Encode and decode Base64 text and files
Base85 (Ascii85) Encoder / Decoder
Encode and decode text using Base85/Ascii85 encoding, commonly used in PostScript and PDF files
Binary ↔ Text Converter
Convert between text and binary representation
Braille Translator
Convert text to Braille Unicode characters and vice versa using Grade 1 Braille
Caesar Cipher
Encrypt and decrypt text with a configurable letter shift
Hex ↔ Text Converter
Convert between text and hexadecimal representation
HTML Entity Encoder/Decoder
Encode and decode HTML entities and special characters
Morse Code Translator
Convert text to Morse code and Morse code to text using ITU standard
NATO Phonetic Encoder
Encode and decode text using the NATO phonetic alphabet (Alpha, Bravo, Charlie, etc.)
Octal ↔ Text Converter
Convert between text and octal (base-8) representation of character codes
Punycode Converter
Convert between Unicode domain names and Punycode (IDN / ACE encoding per RFC 3492)
ROT13 Encoder/Decoder
Apply ROT13 cipher to text (symmetric: encode = decode)
Tap Code Encoder/Decoder
Encode and decode text using the Polybius square tap code cipher
Unicode Encoder/Decoder
Convert text to Unicode escape sequences and back in multiple formats
URL Encoder/Decoder
Encode and decode URL components
UUencode / UUdecode
Encode and decode data in UUencode format, a legacy encoding used in Unix email attachments
Vigenère Cipher
Encrypt and decrypt text using the Vigenère polyalphabetic substitution cipher with a keyword
Rail Fence (Zigzag) Cipher
Encode and decode text using the Rail Fence (Zigzag) cipher with a configurable number of rails. Includes visual rail pattern display.