JSON Formatter & Validator
Paste messy JSON, clean it up, or check it for errors. Everything happens on your device — your data is never uploaded.
Result
Format or minify JSON to see the result.
How to use this
- Paste your JSON into the top box.
- Format pretty-prints it with your chosen indent.
- Minify strips whitespace to the smallest valid form.
- Validate checks for errors and tells you exactly where they are.
- Fold or expand nested objects and arrays with the line chevrons, or use Collapse all and Expand all. Copy result still copies the complete JSON.