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JSON Formatter
Paste ugly JSON, get pretty JSON. That's it. It also validates and shows you where the errors are. The tree view lets you explore nested JSON structures. Click to expand objects and arrays. Search finds anything in your JSON. Auto-fix handles those annoying trailing commas and unquoted keys. Need TypeScript interfaces from your JSON? Python classes? Java POJOs? The export tab generates them. Everything runs in your browser. Your JSON never leaves your device.
Format Options
Keyboard Shortcuts: Ctrl/Cmd+Enter Format | Ctrl/Cmd+M Minify | Ctrl/Cmd+K Validate | Ctrl/Cmd+S Download
How to Use
- Paste your JSON. It formats automatically.
- Click Auto-Fix to fix trailing commas and other common mistakes
- Use Tree View to explore nested structures
- Search to find keys or values
- Click Export to generate TypeScript, Python, or Java code
- Your last 5 JSONs are saved in history
Frequently Asked Questions
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