JSON Formatter& Beautifier
Paste minified or messy JSON and get clean, properly indented output instantly. Also validates your JSON and catches syntax errors.
Hostinger — Fast & Affordable Web Hosting
Build and host APIs that return clean JSON. Free SSL and 99.9% uptime.
How the JSON Formatter Works
Our JSON formatter takes your input — whether it's minified, poorly indented, or has inconsistent spacing — and outputs clean, properly formatted JSON with 2-space indentation.
Unlike simple formatters, our tool also validatesyour JSON while formatting it. If your JSON has syntax errors (missing commas, unquoted keys, trailing commas), we'll tell you exactly where the error is — line number and column — so you can fix it before formatting.
The formatter handles all valid JSON: objects, arrays, nested structures, strings, numbers, booleans, and null values. It preserves your data exactly while making it readable.
Common Use Cases
API Response Debugging
Paste a minified API response to see the structure clearly. Find nested values, check data types, and verify payloads.
Config File Cleanup
Clean up package.json, tsconfig.json, or any configuration file that's become messy after manual edits.
Database Exports
Format JSON exports from MongoDB, Firebase, or other databases for review, documentation, or debugging.
Webhook Payloads
Format incoming webhook payloads from Stripe, GitHub, Slack, or other services to understand their structure.