JSON Formatter
Format, beautify, and validate JSON data quickly and securely.
Invalid JSON format. Please check your data.
About the JSON Formatter
Our JSON Formatter is a free tool built for developers and data analysts. It allows you to quickly clean up messy, unformatted JSON strings into a readable, tree-like structure. It also serves as a JSON validator, instantly letting you know if your JSON has syntax errors.
Is it safe for sensitive data?
Yes! We know JSON data often contains sensitive API keys or personal information. That's why our tool processes everything locally in your web browser. Nothing is ever uploaded or saved on our servers.
Frequently Asked Questions
Is my JSON data uploaded to a server?
No. Your JSON is formatted instantly on your local device. This ensures absolute privacy for your sensitive API keys, user data, or proprietary configurations.
Can this formatter validate broken JSON?
Yes. If your JSON has syntax errors (like missing commas or trailing quotes), the tool will attempt to identify the error and display a precise line location to help you debug it quickly.
Does this tool support minification?
Yes. In addition to beautifying JSON with proper indentation, you can also minify it to strip all unnecessary whitespace, making the payload smaller for network transmission.
How large of a file can I format?
Because it processes locally, there are no artificial server limits. However, processing files larger than 10MB may cause older browsers to briefly freeze during compilation.