Online JSON Formatter & Validator – Free, Fast, and Secure

Easily beautify, validate, and convert your JSON files with our free Online JSON Formatter & Validator. Instantly check JSON syntax, minify or expand code, and convert to CSV, XML, or YAML—all with a click. No login required. Works 100% in your browser for total privacy.

How to Format and Validate JSON Online?

1. Paste Your JSON Data

Simply copy your raw JSON and paste it into the input textarea or upload a JSON file.

2. Click the Format Button

Beautify your JSON for better readability with a click.

3. Validate JSON Syntax

Click Validate to check for any syntax errors and get instant feedback.

4. Minify JSON

Compress your JSON by removing unnecessary spaces for optimized use in production.

5. Convert to Other Formats

Use the conversion buttons to transform JSON into XML, CSV, or YAML effortlessly.

6. Copy or Download Your Result

Easily copy formatted JSON or download the output file for your projects.

Frequently Asked Questions (FAQs)

Yes—your JSON data is 100% secure. All formatting, validation, minification, and conversion happen instantly in your browser. Your data is never uploaded or stored on any server, so you can safely use this tool for sensitive information or private files.

Absolutely! This free online JSON Formatter and Validator allows you to convert JSON to CSV, XML, or YAML format with one click. Simply upload or paste your JSON, and use the conversion buttons for instant, accurate results.

Our tool uses robust parsing and validation logic to accurately detect syntax errors, missing brackets, or unquoted keys. Errors are highlighted instantly, ensuring your JSON data conforms to the correct structure every time.

You can upload files with the .json extension. The tool will read and process any valid JSON file directly in your browser.

No sign-up, installation, or registration required. All features—including formatting, validating, and converting JSON—are available entirely online and free of charge.

Yes! The online JSON formatter and validator is optimized for performance and can handle large JSON files quickly—whether you paste, upload, or fetch them.