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JSON Formatter

Format, beautify, or minify JSON in your browser. Validate and pretty-print instantly — no upload, free online JSON formatter.

Format and minify JSON privately

Paste JSON, beautify it for readability, or minify it for transport. Everything runs locally in your browser.

What you can do with it

Debug an API response
Pretty-print a raw JSON payload so nested fields are easy to scan.
Prepare a compact config
Minify JSON before embedding it in a URL or config file.

How to format JSON

  1. Paste your JSON into the editor.
  2. Click Format to beautify or Minify to compact it.
  3. Copy the result to your clipboard.

Frequently asked questions

Is my JSON uploaded?
No. Formatting runs entirely in your browser. Your data never leaves your device.
Can I minify JSON as well?
Yes. Use Format for indented output or Minify for a compact single line.
What if my JSON is invalid?
You will see a clear parse error so you can fix the input and try again.