JSON Formatter & Validator
Paste your JSON to format, validate, and beautify it instantly.
How to Use
- 1Paste or type your raw JSON into the input area.
- 2Click Format to pretty-print the JSON with proper indentation.
- 3Use the tree view to collapse or expand nested objects and arrays.
- 4Copy the formatted output or download it as a .json file.
Frequently Asked Questions
How do I fix invalid JSON?
Paste your JSON into the formatter and it will highlight the exact line and character where the syntax error occurs, along with a description of what went wrong.
Can I minify JSON with this tool?
Yes. After pasting your JSON, select the Minify option to remove all whitespace and produce a compact single-line output.
Is my JSON data sent to a server?
No. All formatting and validation happens entirely in your browser. Your data never leaves your device.