JSON Formatter

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Choose an action

Pretty Print JSON

Paste JSON, choose indentation, and format it for easier reading.

JSON Input

Indentation

Sort object keys alphabetically Keep escaped unicode as parsed output

Your JSON output will appear here

Pick an action, paste JSON, then run the tool.

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Reference

Quick guidance for the four JSON tools on this page

Format

Readable JSON output

Pretty prints valid JSON using your selected indentation so nested objects and arrays are easier to inspect.

Minify

Compact JSON output

Removes unnecessary whitespace while preserving the JSON structure, useful for payloads and config files.

Validate

Parse and inspect

Checks whether the JSON is valid and reports the top-level type, entry count, and parsed preview.

Sort Keys

Recursive key ordering

Sorts object keys alphabetically at every level to make diffs, reviews, and config cleanup easier.

All processing happens in your browser. Your JSON is not uploaded or stored by this tool.

FAQ

What makes JSON invalid?

Common issues include trailing commas, single quotes instead of double quotes, unquoted object keys, and missing brackets or braces.

Does formatting change the actual data?

Formatting and minifying only change whitespace. Sorting keys changes key order in objects, but not the underlying values.

Can I use this for large JSON payloads?

Yes, within normal browser limits. Very large payloads may take longer to parse and render, especially when pretty printing deeply nested structures.

Is my data saved or shared?

No. The tool runs entirely in your browser, so your JSON stays on your device unless you copy it elsewhere yourself.