ROT13 Encoder / Decoder
Apply the classic ROT13 cipher to obscure spoilers and puzzle answers — encoding and decoding are the same operation.
🔡 Encoding tools
Encode and decode text between Base64, URL, hex and more. All free, all running locally in your browser.
Text to Binary Converter
See any text as 8-bit binary bytes and convert binary back to readable text with validation.
Text to Hex Converter
Convert text to its hexadecimal byte representation and back, with full UTF-8 support for any language.
HTML Entity Encoder / Decoder
Escape text into HTML entities for safe display in markup, and decode entities back to readable text.
URL Encoder / Decoder
Percent-encode and decode URL components so special characters never break your links or query strings.
Base64 Encoder / Decoder
Encode and decode Base64 text online with full Unicode and emoji support. Safe copy-paste for tokens, data URIs and API payloads.