Category
Encoders & Decoders_
Encoders and decoders handle the wrapping formats data travels in, and each one here runs both directions on the same page, because nobody encodes without eventually needing to read the result back. Base64 for binary-safe transport, percent-encoding for URLs, entities for HTML, and JWTs for signed claims. Beyond those are the escapes that are easy to get subtly wrong: Unicode notations where four hex digits stop at U+FFFF, and source-code literals where the same hex escape means a character in one language and a raw byte in another. A pasted token is a credential, so nothing here is sent anywhere.
Live_Tools [13]
Base64 EncoderEncode text to Base64, UTF-8 safe.Base64 DecoderDecode Base64 back to readable text.URL EncoderPercent-encode text for safe use in URLs.URL DecoderDecode percent-encoded URL strings.JWT DecoderDecode JSON Web Tokens without sending secrets anywhere.HTML Entity Encoder and DecoderEscape text into HTML entities, or decode them back.HTML Entity DecoderDecode HTML entities, and see how many times they were encoded.Escape CharactersEscape a string as a source-code literal for fifteen languages.Unicode Escape/UnescapeEscape and unescape Unicode sequences.String to Hex ConverterConvert strings to hex byte values and back.Caesar CipherEncode, decode, or break a Caesar shift without the key.ROT13 Encoder/DecoderApply the ROT13 letter-substitution cipher.Punycode ConverterConvert internationalized domains to Punycode and back.