Can I format invalid JSON?

No, the formatter requires valid JSON syntax. If your JSON has errors, the tool will show an error message with the line number to help you fix it.

What is JSON minification?

Minification removes all unnecessary whitespace (spaces, tabs, newlines) from JSON to reduce file size. This is useful for API responses and configuration files.

Is there a size limit?

There is no hard limit, but very large JSON files may slow down your browser. For files over a few MB, consider using a command-line tool like jq.

// json-formatter

JSON Formatter

Format, validate, and minify JSON data with syntax highlighting.

Input JSON

Formatted Output

How to Use JSON Formatter

Paste JSON-Paste or type your JSON data into the input editor.
Auto-format-The JSON is automatically formatted as you type with syntax highlighting.
Adjust indent-Choose 2 spaces, 4 spaces, or tab indentation from the dropdown.
Copy result-Click Copy to copy the formatted output to your clipboard.

About JSON Formatter

JSON Formatter formats, validates, and minifies JSON data with real-time syntax highlighting. It instantly detects syntax errors and reports the exact line number.

The tool supports multiple indentation styles and provides both formatting and minification. Use it to make JSON readable or compact for production use.

All processing happens entirely in your browser. No JSON data is ever sent to a server.

FAQ

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