45+ free tools for encryption, encoding, hashing, and text manipulation. Everything runs in your browser — your data never leaves your machine.
Browse All ToolsEncode text to Base64 or decode Base64 back to text.
Encode or decode URLs with proper percent-encoding.
Convert special characters to HTML entities and back.
Convert text to binary and binary back to text.
Convert text to hexadecimal and hexadecimal back to text.
Convert text to octal and octal back to text.
Apply or remove the classic ROT13 letter rotation cipher.
Encrypt or decrypt text using a customizable Caesar shift cipher.
Encrypt text using the ancient Atbash substitution cipher.
Encrypt or decrypt using the Vigenere polyalphabetic cipher with a keyword.
Encrypt or decrypt using the affine cipher with custom keys.
Encrypt text using the transposition rail fence cipher.