JSON Formatter & Validator
Paste JSON payloads to validate syntax and pretty-print with indentation—perfect for API debugging, configs, and sharing readable examples.
Why validate and format JSON?
APIs, mobile apps, and configs depend on valid JSON. Pretty-printing makes nested payloads readable; validation catches mistakes before they hit production.
⚡ Features
- Syntax validation with clear error feedback
- Pretty-print with indentation
- Copy formatted output quickly
- Free online—no install
🛠️ How to use
- Paste JSON into the input
- Click Format JSON
- Fix any reported issues and run again if needed
📌 Good for
- Debugging API responses
- Cleaning config or fixture files
- Sharing readable examples in chat or docs