Free JSON Formatter & Validator
Paste your JSON to format, validate and beautify it. Errors are highlighted instantly.
Frequently Asked Questions
What does this JSON formatter do?
It takes raw JSON input, validates it, and outputs a nicely indented, readable version. It also highlights errors if the JSON is invalid.
Is my JSON data secure?
Yes. All formatting and validation happen entirely in your browser. No data is sent to any server.
Can I minify JSON too?
Yes, use the Minify button to compress your JSON into a single line with no extra whitespace.
What happens if my JSON is invalid?
The tool will display the exact error message with the position of the problem, helping you fix it quickly.
About JSON Formatting
JSON (JavaScript Object Notation) is the most widely used data format for APIs and configuration files. Properly formatted JSON is easier to read, debug, and maintain. This tool helps developers quickly validate and beautify JSON data without installing any software.