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JSON Formatter & Validator

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

JSON input

Formatted output

// Click Format or Minify

Indent:

How it works

1
Paste JSONEnter any JSON - minified, malformed, or already formatted.
2
Format or minifyChoose indentation (2 or 4 spaces) for formatting, or minify to a single line.
3
CopyCopy the formatted JSON.

Why does my JSON show an error?

JSON syntax errors - missing commas, trailing commas, unquoted keys, or single quotes - are invalid. The error message indicates the position.

What's the difference between format and minify?

Format adds indentation and line breaks for readability. Minify removes all whitespace for smallest file size.

Can I convert between tabs and spaces?

Yes - set indent to 0 for tabs, or 2/4 for spaces.

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