JSON Formatter
Format and beautify JSON data.
Processed locally — files never leave your device
JSON · Max 5MB
Drop a file here, or browse
JSON
How it works
1
Paste or type your JSON data
2
The JSON is formatted and validated instantly
3
Copy or download the formatted result
About JSON Formatter
Format and beautify messy JSON data with proper indentation. Paste minified or ugly JSON and get clean, readable output. Validates your JSON and highlights errors if the syntax is invalid. Powered by JustUse.me — free, ad-free, and private. This tool runs entirely in your browser. Your files are never uploaded to any server.
Frequently asked questions
Does it validate JSON syntax?
Yes. If your JSON has syntax errors, the tool will show you what's wrong so you can fix it.
Can I format large JSON files?
Yes. Text input up to 500 KB is supported.