Beautify any JSON
Turn minified or hand-written JSON into clean, readable output with consistent indentation.
Tools
JSON Formatter
Paste any JSON — minified, messy, or partially broken — and get it beautifully formatted. Validates syntax and reports errors inline.
Inline validation
Syntax errors are surfaced immediately with a clear message so you can fix them fast.
Configurable indent
Choose 2 spaces, 4 spaces, or tabs to match your codebase style guide.
Indent:
How to use JSON Formatter
Step 1
Paste JSON input
Insert minified or unformatted JSON directly into the editor.
Step 2
Choose indentation
Select 2 spaces, 4 spaces, or tabs to match your project style.
Step 3
Format and validate
Generate readable JSON output and fix errors if invalid syntax is detected.
FAQ
Does this formatter validate JSON syntax?
Yes. Invalid JSON triggers an inline parse error so you can quickly correct it.
Can I control indentation style?
Yes. You can format output with 2 spaces, 4 spaces, or tabs.
Is my data sent to a server?
No. Formatting runs in your browser and your JSON remains on your device.