JSON Formatter Free — Format & Validate

JSON Formatter & Validator Free — Beautify JSON Instantly

Paste messy JSON and get perfectly formatted, indented output. DragKit validates JSON syntax and highlights errors — all in your browser, no data sent anywhere.

✨ Pretty Print

Transform minified JSON into beautifully indented, readable format. Customizable indentation (2 or 4 spaces).

✅ Validation

Instantly detect syntax errors with line numbers. Fix broken JSON fast.

🔒 Private

Your API responses and config files stay on your device. No server sees your data.

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JSON Formatter FAQ

Does it validate JSON?

Yes. Invalid JSON is detected with error messages pointing to the issue.

Can I minify JSON?

Yes. Toggle between beautified and minified output.

Is there a size limit?

No hard limit. Very large JSON files depend on your browser's memory.

Is my data safe?

Yes. Everything is processed locally. No data is sent to any server.

Is this free?

Yes, completely free.

📝 Step by Step

Paste your JSON data
Click Format to beautify with indentation
View syntax-highlighted output
Use minify to compress JSON

✨ Key Benefits

📝 Beautify & Minify — Pretty-print JSON with 2 or 4-space indentation, or minify for production

🔍 Error Detection — Instantly catch syntax errors in your JSON

🔒 100% Private — Your data stays in your browser

❓ FAQ

What JSON errors can it detect?

Missing commas, brackets, quotes, invalid characters, and structural errors.

Can I minify JSON?

Yes, one click to remove all whitespace for smaller file sizes.

Is it free?

Yes, completely free with no limits.