🧪 Free JSON Formatter & Validator
Paste your raw JSON below and click Format to validate and beautify your data instantly.
What is a JSON Formatter & Validator?
A JSON Formatter and Validator is an online tool that helps you organize messy or compact JSON data into a clean, readable format and verifies that it’s valid. JSON (JavaScript Object Notation) is widely used for APIs, configurations, and data interchange in web development.
Why Use This Tool?
- ✅ Beautify and structure raw or minified JSON
- ✅ Instantly detect invalid or broken JSON syntax
- ✅ Copy and reuse cleaned JSON for projects or debugging
- ✅ 100% browser-based — no data is stored or sent
Common Uses for JSON Formatter & Validator
- 🔍 Debugging API responses from backend servers
- 🛠️ Cleaning up configuration files for web and mobile apps
- 📁 Preparing readable JSON for presentations or documentation
- ⚙️ Working with AJAX, REST, or Firebase data structures
How It Works
Just paste your unformatted or raw JSON into the input box, click “Format JSON,” and the output will show a clean, indented, and syntax-highlighted version. If the input is invalid, the tool will alert you with the exact error, helping you fix your JSON quickly and easily.
This free JSON formatter works seamlessly on desktop, tablet, and mobile. Whether you’re a developer, analyst, or student — this is your go-to solution for validating and beautifying JSON data.