How to format or minify JSON

1. Paste your JSON

   Paste any JSON text — an object, array, or primitive — into the JSON field. The tool validates the structure on the server and returns an error message if the input is not valid JSON.

2. Choose output mode

   Select Pretty-print to add indentation and line breaks so the structure is human-readable, or Minify to remove all unnecessary whitespace and produce a compact single-line payload. The default is pretty-print.

3. Adjust indent and options (pretty only)

   For pretty-print, set the indent to 2, 4, or 8 spaces, or use tabs. Optionally enable Sort object keys to produce alphabetically stable output (useful for diffs), or enable Trailing newline for tools that require it.

4. Run and copy the result

   Press Run. The formatted or minified JSON appears in the output area. Click Copy to grab the result. If you need a file, paste into a text editor and save as .json.