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Online JSON Converter from String

Paste a JSON string (escaped) and convert it into valid JSON you can read and format. You can also take normal JSON and convert it into an escaped JSON string literal for logs, code, or configs.

Category: Developer · URL: /tools/online-json-converter-from-string.html
Related tools:
Privacy: runs entirely in your browser; nothing is uploaded.
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Choose the conversion direction, paste your text, then convert.

  1. Select String → JSON to unescape and parse a JSON string, or JSON → String to generate an escaped JSON string literal.
  2. Paste your content into Input.
  3. Click Convert. Use Pretty or Minify if needed.
  4. Click Copy Output to copy the result.
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Secondary intents covered: Turn an escaped JSON string (with backslashes) into readable JSON, Validate whether the input is valid JSON or a valid JSON string literal, Pretty-print the parsed JSON with configurable indentation, Minify JSON output for compact storage or transmission, Convert normal JSON into an escaped JSON string literal for embedding in code, Quickly copy the converted output to clipboard, Troubleshoot common parsing errors (quotes, trailing commas, bad escapes), Swap input and output to round-trip between formats

FAQ

What does “String → JSON” do?

It unescapes a JSON string (like "{\"a\":1}") and then parses the inner JSON so you get real formatted JSON.

What if my input is already normal JSON (no extra quotes/backslashes)?

It will be parsed and then pretty-printed or minified based on your output settings.

Can it handle escaped JSON without the outer quotes?

Yes—if you paste something like {\"a\":1}, the tool tries to interpret it as an escaped JSON string and then parse it.

What does “JSON → String” produce exactly?

It outputs a JSON string literal that contains your JSON (escaped), e.g. {"a":1} becomes "{\"a\":1}".

Why do I get an “Invalid JSON” error?

Common causes are trailing commas, single quotes, or invalid escape sequences. Fix the input and convert again.

Is my data uploaded anywhere?

No. The conversion runs in your browser only; this tool does not send network requests.

Does it support arrays, numbers, booleans, and null?

Yes—any valid JSON value is supported (object, array, string, number, boolean, or null).