🔐 Encode / Decode Tools

Encode and decode text with Base64, URL encoding, HTML entities, Unicode escapes, and ROT13. Choose a tool below to get started.

Base64 Encode/Decode Encode text to Base64 or decode Base64 to plain text instantly. Free online Base64 conversion tool with UTF-8 support. URL Encode/Decode Encode or decode URLs and query strings instantly. Convert special characters to percent-encoded format and back. HTML Entity Encode/Decode Convert special characters to HTML entities and back. Encode angle brackets, ampersands, quotes, and other characters for safe HTML. Unicode Escape/Unescape Convert text to Unicode escape sequences (\uXXXX) and back. Useful for JavaScript, JSON, and internationalization work. ROT13 Encoder/Decoder Apply ROT13 cipher to your text. Shift each letter 13 positions in the alphabet. Encoding and decoding use the same operation.