JSON String Escaper & Unescaper

What JSON escaping covers

Inside a JSON string only the double quote, the backslash, and control characters below U+0020 must be escaped, so \", \\, \n, \t, and \u0000-style codes are what you will see. Accented letters and emoji may stay as they are, since JSON is UTF-8. JSON has no \' escape and no single-quoted strings, which is why text copied from JavaScript source often fails to parse.

Double escaping and HTML pages

Seeing \\n or \\\" in a log usually means a value was escaped twice, often because a JSON document was stored as a string inside another JSON document. Unescape once, look at the result, and unescape again if it still has backslashes where there should be none.

Escaping for JSON does not make a value safe inside an HTML <script> block: a string containing </script> still ends the script early. Escape < as \u003c there, or put the data in a <script type="application/json"> element and read it with JSON.parse.

How to use it

1. Paste raw text or an escaped JSON string.
2. Choose Escape or Unescape mode.
3. Copy the converted string result.

Privacy & limitations

All string escaping operations take place locally in your browser memory.