🧹 JSON Formatter & Validator

Easily clean, format, and beautify your JSON data online.

Format with Ease

This tool lets you paste or upload JSON, then instantly beautifies and validates it. Perfect for developers, students, and anyone working with APIs or structured data.

📄 Paste or upload your JSON
⚡ Instant formatting & validation
📁 Download formatted JSON
🛠 JSON Formatter Icon

Why Use a JSON Formatter?

JSON is widely used in APIs, apps, configurations, and backend systems. However, raw or minified JSON can be messy and difficult to understand. A JSON formatter helps structure the data visually with proper indentation, making it easier to debug, edit, and present.

Whether you’re fixing malformed JSON, trying to understand a large dataset, or preparing documentation, this tool ensures your JSON is clean, readable, and error-free.

Features of Utilixir's JSON Formatter

Utilixir's JSON Formatter is built for speed, accuracy, and ease. It beautifies your JSON with proper indentation, highlights errors, and ensures your data is valid. You can also download your formatted JSON for reuse.

• Supports large JSON files

• Highlights syntax errors

• Auto-detects malformed JSON structure

• Secure processing: no data stored

• Works instantly in your browser

• Free to use on any device

Key Benefits of Our JSON Formatter

✔ Readable Output: Proper indentation and structure for easier understanding.
✔ Validation: Automatically checks for errors and malformed JSON.
✔ Error Highlighting: Pinpoints exactly where issues occur.
✔ Fast & Secure: Runs in your browser; no data is uploaded or stored.
✔ Developer-Friendly: Perfect for API responses, logs, and config files.
✔ Cross-Platform: Works on desktop, mobile, and tablets.

How to Use the JSON Formatter

1. Paste JSON: Paste your raw or messy JSON into the editor.

2. Click “Format JSON”: The tool beautifies and validates instantly.

3. Review & Fix: Errors will be highlighted if the JSON is invalid.

4. Download: Save your formatted JSON as a file.

Tip: Use this tool when debugging APIs, formatting logs, writing documentation, or cleaning JSON-based config files.

Frequently Asked Questions

What formats are supported?

JSON input only. Output is formatted JSON.

Is there a size limit?

The tool works best with files under ~5MB.

Are my files stored?

No. All data is processed locally in your browser.

Do I need an account?

No registration needed.

Can I use this on my phone?

Yes! Fully mobile-friendly.

More Information

Utilixir's JSON Formatter ensures clean, readable, and valid JSON output every time. With fast processing, error checking, and secure handling, it’s ideal for developers working with APIs, web projects, or large datasets. Use it anytime—free, fast, and reliable.