JSON Formatter & Validator Online
This free JSON Formatter & Validator helps developers instantly clean, beautify, compress, and validate JSON data. Paste your unformatted or broken JSON, and the tool shows structured output along with validation errors.
Clean, Format & Validate JSON Instantly
Paste your JSON into the input box.
Click Format JSON to beautify/indent the structure.
Click Minify JSON to compress it into a single line.
Click Validate JSON to check for errors and identify issues.
Copy the cleaned JSON for your API, backend, or documentation use
🧭 How to Use
FAQ
Q1. What does a JSON Formatter do?
A. It beautifies messy or unstructured JSON into a clear, readable format.
Q2. Can this tool validate JSON errors?
A. Yes, it detects invalid syntax and displays exact error messages.
Q3. Is my data saved?
A. No — everything runs in your browser only.
Q4. Can I minify JSON for API use?
A. Yes, the Minify button compresses JSON to the smallest possible form.