JSON Format/Validate: Beautify and Check JSON Syntax

Working with JSON data is a daily task for developers, but raw JSON can be hard to read and debug. Our JSON Format/Validate tool instantly beautifies messy JSON, validates syntax with precise error messages, and helps you navigate complex data structures through interactive JSON Path exploration.

How to Use

1. Paste or type your JSON into the left panel
2. The tool automatically validates and formats your JSON in real-time
3. Choose your preferred indentation (2 spaces, 4 spaces, or tab)
4. Click any value in the formatted output to see its JSON Path
5. Review syntax highlighting to quickly identify data types
6. Fix any validation errors shown with precise line and column positions

Features

Real-time Validation: Get instant feedback on syntax errors with exact error positions. No more hunting through long JSON strings to find missing commas or brackets.

Flexible Formatting: Choose between 2-space, 4-space, or tab indentation to match your project’s coding standards. The formatted output is ready to copy and paste directly into your code.

Syntax Highlighting: Color-coded keys, strings, numbers, booleans, and null values make JSON structure immediately clear. Different colors for each data type improve readability and help spot mistakes.

JSON Path Explorer: Click any value to reveal its JSON Path (like $.store.book[0].author). Essential for working with JSON APIs, writing queries, or debugging nested data structures.

Two-Panel Layout: Input on the left, formatted output on the right. Edit your JSON while simultaneously viewing the beautified result.

Common Use Cases

• Debug API responses by validating and formatting server output
• Beautify minified JSON from production systems for easier reading
• Find JSON Path expressions for querying nested data
• Verify JSON configuration files before deployment
• Format JSON for documentation or code examples
• Clean up JSON before committing to version control
• Validate webhook payloads during integration testing
• Explore complex data structures from third-party services

Frequently Asked Questions

Does this tool store my JSON data? No. All formatting and validation happens in your browser. Your JSON never leaves your device.

Can I format very large JSON files? Yes, the tool handles large JSON files efficiently in your browser, though extremely large files (10MB+) may slow down real-time formatting.

What happens if my JSON has syntax errors? The validator shows the exact position of the error with a helpful message explaining what’s wrong.

Can I copy the JSON Path by clicking values? Yes, click any value in the formatted output to see its JSON Path. You can then copy it for use in your code or queries.

Does syntax highlighting work for all JSON types? Yes, the tool highlights strings, numbers, booleans, null values, keys, and structural elements (brackets, braces) with distinct colors.

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Try our free JSON Format/Validate tool now.