What does JSON escaping do?

It converts characters that would break a JSON string — double quotes, backslashes, newlines, tabs, control characters — into their escaped forms (\" \\ \n \t \u00XX) so the text can live safely inside a JSON value.

Which characters must be escaped in JSON?

Only two are mandatory: the double quote (\") and backslash (\\), plus control characters U+0000–U+001F (newline \n, tab \t, carriage return \r, etc.). Forward slashes may be escaped but don't have to be.

The reverse — turning \n back into real line breaks and \u00e9 into é — used when you've copied an escaped string out of JSON and want the original readable text.

Why does my JSON break when I paste text into it?

Pasted text containing quotes or line breaks terminates the string early or introduces raw control characters. Escaping first is the fix — it's the #1 cause of 'unexpected token' errors in hand-edited JSON.

How are emoji and non-Latin characters handled?

They're valid in JSON as-is (UTF-8), but the tool can optionally convert them to \uXXXX escapes (with surrogate pairs for emoji) for systems that require ASCII-only JSON.

JSON Escape / Unescape — Free Online String Escaper

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JSON Escape & Unescape — Put Anything Inside a JSON String Safely

Embedding a code snippet, an HTML fragment, or a multiline message inside JSON by hand almost always breaks: the first raw quote or newline kills the parse. This free tool escapes any text into a valid JSON string literal — and unescapes JSON strings back to readable text — instantly in your browser. No signup.

The Escape Table

Character	Escaped	Character	Escaped
" (quote)	\"	newline	\n
\ (backslash)	\\	tab	\t
carriage return	\r	backspace	\b
form feed	\f	other control chars	\u00XX

Where This Saves the Day

API testing — paste a multiline email body or HTML template into a curl/Postman JSON payload without hand-escaping every quote.
Config files — embed regex patterns (full of backslashes) into JSON settings; each literal \ must become \\, which humans reliably get wrong.
Log analysis — unescape stack traces stored as JSON string values back into readable multi-line form.
Code generation — turn file contents into string constants for JSON-based fixtures and snapshots.

Double-Escaping: The Classic Bug

Escaping already-escaped text turns \n into \\n — which unescapes back to a literal backslash-n, not a newline. If your output shows \n as visible characters instead of line breaks, it was escaped twice somewhere in the pipeline. The unescape mode here is the quickest way to diagnose how many layers deep a string is wrapped.

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All conversion happens locally — tokens, templates, and code never leave your device.

Json Escape

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