JSON Validator

Advanced JSON Validator & Formatter

Instantly validate your JSON data and view syntax errors or format it for readability. A modern, secure browser-based JSON validator for developers, SEO tools, and APIs.

JSON is valid!

Formatted JSON Output:

About This JSON Validator

This fast, lightweight online JSON Validator instantly checks your JSON data for syntax errors and reports them in real time. It also beautifully formats valid JSON data to improve readability, debugging, and API integration.

Pro Tips:

• Paste raw JSON and click 'Validate JSON' to check structure and formatting.
• If valid, the JSON will auto-format in the output box for easy reading.
• If invalid, the tool highlights the error message and exact issue.
• Copy the formatted, valid JSON using the 'Copy Result' button for use in apps or APIs.

How to Use:

1. Paste or type your JSON code in the input field above.
2. Click 'Validate JSON' to check and format the JSON.
3. Review error messages if the JSON is invalid, and correct the issues.
4. Copy the clean, formatted JSON using 'Copy Result'.

All validation and formatting happens securely in your browser — no data is sent to any server.

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