JSON Formatter
Format and validate JSON.
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About JSON Formatter
The JSON Formatter is a free online tool that instantly beautifies or minifies your JSON. Paste any JSON, then click Format to pretty-print it with clean 2-space indentation, or Minify to strip out every unnecessary space and line break. If your JSON has a syntax error, it shows the exact parser message so you can fix it fast.
Everything runs entirely in your browser, so your data is never uploaded to a server. Format, minify, and copy the result to your clipboard with a single click, with no sign-up, no limits, and no cost.
Frequently asked questions
- Is the JSON Formatter free to use?
- Yes, it is completely free with no sign-up, no limits, and no ads blocking your work.
- Is my JSON data uploaded anywhere?
- No. All formatting and minifying happens locally in your browser, so your data never leaves your device.
- What is the difference between Format and Minify?
- Format pretty-prints your JSON with 2-space indentation for readability, while Minify removes all whitespace to produce the smallest possible output.
- What happens if my JSON is invalid?
- The tool shows the exact error message from the JSON parser and does not crash, so you can locate and fix the problem quickly.
- Can I copy the formatted result?
- Yes. Click the Copy button to copy the output to your clipboard using your browser's native clipboard feature.
- Does it work offline?
- Once the page has loaded, the formatter runs fully client-side and does not require an internet connection to process your JSON.