Encoding & Crypto

Encode and decode text online, Base64, URL encoding, binary, hex, Morse code, Caesar cipher, ROT13, and more. Free, instant, no sign-up required.

• JWT Decoder & Encoder — Developer tool for decoding and encoding JSON Web Tokens instantly, making it easy to inspect JWT payloads, headers, and signatures without any backend setup.
• Base64 Encoder / Decoder — Encode and decode Base64 strings instantly. Free online Base64 encoder and decoder, works entirely in your browser with no signup or installation required.
• URL Encoder / Decoder — Encode and decode URLs and query string parameters. Free online URL encoder and decoder, works in your browser with no account or installation needed.
• HTML Entities — Encode text to HTML entities and decode HTML entities to text. Free online HTML entity encoder and decoder, works instantly in your browser with no signup.
• Binary to Text Converter — Convert text to binary (0s and 1s) and binary back to text. Free online text to binary converter, works entirely in your browser with no account needed.
• Hex ↔ Text — Convert text to hexadecimal and hexadecimal back to text. Free online hex encoder and decoder, works in your browser with no signup or installation required.
• Morse Code Translator — Translate text to Morse code and decode Morse code to text. Free online Morse code translator, works instantly in your browser with no account needed.
• ROT13 Cipher — Apply ROT13 substitution cipher to text. Encode or decode instantly. Free online ROT13 encoder and decoder, works in your browser with no signup required.
• Caesar Cipher Encoder — Encrypt and decrypt text using the Caesar cipher with custom shift. Free online Caesar cipher tool, works entirely in your browser with no account or installation needed.