{ }

JSON Formatter

Format, validate, and minify JSON online — live preview

Input JSON
Output
Indent:
{
  "name": "Lazyblink",
  "version": "1.0",
  "tools": 90,
  "free": true
}
✓ Valid JSON76 chars → 76 chars formatted
Browser-based, files never uploaded Instant results Works on any device

How to use JSON Formatter

  1. 1Paste JSON in the left panel
  2. 2See formatted output on the right instantly
  3. 3Invalid JSON shows error message
  4. 4Click Minify or copy formatted output

About this tool

Format and validate JSON online with live syntax highlighting. Minify or beautify JSON. Spot errors instantly with line-by-line error reporting.

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Frequently asked questions

What JSON errors does it catch?

Missing commas, unclosed brackets, unquoted keys, trailing commas, and invalid values.

Can it handle large JSON?

Yes — up to 5MB JSON files.