What this tool does
JSON is easy to read when it’s neatly indented and almost impossible when it’s a single compressed line. This tool does both jobs: beautifyre-indents JSON so you can read and debug it, and minify strips every unnecessary space to make the smallest possible payload. It also validates as it goes, so you instantly know whether your JSON is well-formed.
How to format JSON
- Paste your JSON into the input box.
- Click Beautify to pretty-print it, or Minify to strip whitespace.
- Choose 2-space, 4-space or tab indentation to match your project’s style.
- If it’s invalid, you’ll see exactly what went wrong. Copy or download the result.
Lenient input
Real-world JSON is often copied from JavaScript, where single quotes, unquoted keys and trailing commas are common. This formatter accepts that relaxed input and automatically repairs it into valid, standard JSON — a small note tells you when it has done so.
Frequently asked questions
Does it validate JSON? Yes — formatting fails with a clear error message if the JSON isn’t valid.
What’s the difference between beautify and minify? Beautify adds indentation and line breaks for readability; minify removes them for the smallest file size.
Can it fix single quotes and trailing commas? Yes — it auto-corrects common JavaScript-style mistakes into valid JSON.
Need to compare two JSON files? Use the JSON Diff Checker.
Is my data private? Completely — the JSON is processed in your browser and never uploaded.