JSON Formatter

Format, validate and minify JSON instantly

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Minified or malformed JSON is difficult to read and even harder to debug. This formatter instantly pretty-prints your JSON with proper indentation and highlights syntax errors, making it easy to validate API responses, config files, and log data.

How to format and validate JSON

1
Paste your JSON

Type or paste raw, minified, or malformed JSON into the input area.

2
Format or minify

Click Format to pretty-print with indentation, or Minify to produce compact output.

3
Copy the result

Use the Copy button to copy the formatted JSON to your clipboard.

🎨
Pretty-print

Transform minified or messy JSON into clean, indented, readable output instantly.

✅
Syntax validation

Instantly highlights syntax errors so you can locate and fix them quickly.

📦
Minify

Strip all whitespace to produce compact JSON for use in production code or APIs.

⚡
No uploads

Everything runs in your browser — your data never leaves your device.

FAQ

It adds proper indentation and line breaks, making JSON structures easy to read, navigate, and debug.

Paste your JSON and click Format. Any syntax errors will be highlighted with the location of the problem.

Minification removes all unnecessary whitespace, reducing file size — useful for APIs and production builds.

There is no hard limit, but very large JSON (above 10 MB) may be slow to process in some browsers.

The formatter applies 2-space indentation, which is the most common convention for JSON and is used by most linters and editors.

Yes. The formatter correctly handles deeply nested objects, arrays, mixed types, and Unicode strings.

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