How do I format minified JSON?

Paste the minified JSON into the input field. The tool automatically parses and pretty-prints it with 2-space indentation. You can switch to 4-space indentation using the toggle.

What happens if my JSON has errors?

The tool reports the exact error message from the JSON parser, helping you identify issues like missing commas, unclosed brackets, or invalid values.

Can I format very large JSON files?

The tool works well with JSON up to a few megabytes. For very large files, processing may take a moment. All formatting happens in your browser.

JSON Formatter

Pretty-print and format JSON with proper indentation.

$json input

lines

0 chars1 lines

$formatted[READY]

lines

0 chars1 lines

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FAQ

How do I format minified JSON?: Paste the minified JSON into the input field. The tool automatically parses and pretty-prints it with 2-space indentation. You can switch to 4-space indentation using the toggle.
What happens if my JSON has errors?: The tool reports the exact error message from the JSON parser, helping you identify issues like missing commas, unclosed brackets, or invalid values.
Can I format very large JSON files?: The tool works well with JSON up to a few megabytes. For very large files, processing may take a moment. All formatting happens in your browser.

The JSON Formatter parses your JSON and outputs it with consistent indentation, making deeply nested structures easy to read. Supports 2-space and 4-space indentation. Instantly detects syntax errors and reports their location. Essential for debugging API responses, configuration files, and data inspection.