What does a JSON Formatter do?

A JSON Formatter turns minified or messy-looking JSON data into indented, readable text (pretty-print). It can also do the reverse: strip out all whitespace and compact the JSON into a single line (minify).

Why is my JSON showing as invalid?

If the text you entered isn't valid JSON (e.g. missing quotes, extra or missing commas, or unquoted key names), the browser's JSON parser reports the error as-is; the message usually points to roughly where in the text the problem is.

What's the difference between pretty-print and minify?

Pretty-print indents JSON line by line so it's easy for humans to read — useful while developing and debugging. Minify strips all unnecessary whitespace to shrink the data to its smallest size — useful for reducing file size in production.

Is my data sent to a server?

No. All formatting happens in your browser using JavaScript; the JSON you enter is never sent to any server.

Tools/💻 Digital Tools/JSON Formatter

JSON Formatter

Format JSON data into readable pretty-print, or minify it into a single compact line.

Version 1.0 · Last Updated: August 3, 2026 · Maintained by ToolLarder

Indent

JSON Input

Paste your JSON here…

Result

Paste some JSON to see the result.

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