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JSON Formatter

Format, validate, and beautify your JSON data with syntax highlighting.

Input JSON

Output

About JSON Formatter

Free JSON formatter, validator, and beautifier with syntax highlighting. Paste minified or messy JSON and instantly get clean, indented output. Validate JSON syntax to catch errors, minify JSON for production use, and view structured data with color-coded highlighting. Handles large JSON files and nested objects with ease - essential for API debugging, configuration editing, and data analysis.

Frequently Asked Questions

How do I validate my JSON data?▾

Paste your JSON into the input field and the tool will automatically validate the syntax. If there are errors, it highlights the exact line and position where the issue occurs, making it easy to fix malformed JSON.

Can this tool handle large JSON files?▾

Yes, the tool processes JSON entirely in your browser and can handle large files with deeply nested structures. There is no server upload or file size limit.

What is the difference between beautify and minify?▾

Beautify adds indentation and line breaks to make JSON human-readable. Minify removes all whitespace to reduce file size, which is useful for API responses and production configurations.

What are common JSON syntax errors?▾

The most frequent JSON errors include trailing commas after the last item in an array or object, using single quotes instead of double quotes, missing commas between key-value pairs, and unescaped special characters in strings. This tool pinpoints the exact location of any syntax error so you can fix it quickly.

Can I use this JSON formatter for API debugging?▾

Yes. When working with REST APIs, responses are often minified. Paste the raw API response into this tool to instantly beautify it with proper indentation, making it much easier to read, debug, and understand the data structure.

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