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String Escape & Unescape

Escape or unescape strings for JSON, JavaScript, HTML, URL, and Unicode. Click Escape or Unescape to process.

Mode:
Input
Output 
Click Escape or Unescape to process

Mode Reference

JSON Escapes quotes, backslashes, newlines, tabs
JavaScript Same as JSON + single quotes, null bytes
HTML Escapes < > & " '
URL encodeURIComponent / decodeURIComponent
Unicode Non-ASCII to \uXXXX escape sequences

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How to Escape and Unescape Strings

Every language has different escape rules. This string escape tool encodes and decodes JSON, JavaScript, HTML, URL, and Unicode sequences so you can paste a value into a config or a snippet without breaking the surrounding syntax.

Processing is client-side. Use JSON mode for JSON.stringify-style quotes, HTML mode for entities, and Unicode mode for \uXXXX sequences. The Base64 tool is the right choice when you need binary-safe encoding instead of escapes.

Tips

  • Escape before embedding a user string inside JSON — unescaped quotes will break parsers.
  • HTML escape is not a full XSS sanitizer; it is for putting text into markup safely as content.
  • Round-trip: escape then unescape to confirm you did not lose characters.

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