JSON Formatter
Format and beautify messy JSON data.
How to Use
- Paste your raw or minified JSON into the box.
- Choose an indentation style (2 spaces, 4 spaces, or tabs).
- Click Format / Beautify to pretty-print it, or Minify to compress it to one line.
- If the JSON is invalid, an error message shows exactly what went wrong.
Features
- Beautify or minify JSON with one click
- Choice of 2-space, 4-space, or tab indentation
- Clear error messages for invalid JSON
- Processed entirely in your browser — nothing is uploaded
Frequently Asked Questions
Is my JSON data uploaded to a server?
No. Formatting and validation happen entirely in your browser using JavaScript's built-in JSON parser.
What happens if my JSON has a syntax error?
The tool shows the exact error reported by the parser, which usually includes the position of the problem, so you can fix it quickly.
Can this handle very large JSON files?
Yes, though very large files (multiple megabytes) may be slow to format depending on your device, since all parsing happens client-side.
