How to use it
- 1Paste your JSON into the input panel.
- 2Choose Format JSON, Minify, or Validate.
- 3Copy the generated result when you are ready to use it.
Developer tool
JSON Formatter
Format, minify, validate, and copy JSON directly in your browser without sending your data to a processing server.
JSON input
Paste valid JSON to format or minify it.
Result
Your result will appear here.
No output yet.
Features
- ✓ Pretty-print JSON with two-space indentation
- ✓ Minify JSON into a compact single-line result
- ✓ Validate JSON and show parser errors
- ✓ One-click copy for valid output
- ✓ Local browser processing
Privacy
Files are processed in your browser in this Version 1 implementation. Your selected file is not sent to a Toolbox server for processing.
Frequently asked questions
What happens if my JSON is invalid?
The parser error is shown below the result area so you can locate the issue and try again.
Does this JSON formatter upload my data?
No. Formatting, minifying, and validation happen locally in your browser in this Version 1 implementation.
Can it minify large JSON?
It can process JSON that your browser can parse comfortably. Very large payloads may use more browser memory.