Paste messy JSON and get perfectly formatted, syntax-highlighted output.
Frequently Asked Questions
What is a JSON formatter?
A JSON formatter takes raw or minified JSON and restructures it with proper indentation and line breaks to make it human-readable. It also validates the JSON syntax.
Is my data sent to a server?
No. All formatting happens locally in your browser. Your JSON data never leaves your device, making it safe for sensitive data.
Can it detect JSON errors?
Yes. If your JSON is invalid, the formatter displays the exact error message and approximate position so you can fix it quickly.
Does it support syntax highlighting?
Yes. Keys, strings, numbers, booleans, and null values are each color-coded for easy visual scanning of the JSON structure.