JSON Formatter & Validator

About this JSON Formatter

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. However, JSON is often transmitted in a “minified” format to save bandwidth, making it difficult to read. Our free JSON Formatter takes messy, minified JSON and structures it with proper line breaks and indentation.

How to Use the JSON Formatter

1. Paste your raw JSON data into the “Input JSON” box on the left.
2. Click the “Format / Beautify” button to structure the code, or “Minify” to remove all unnecessary whitespace.
3. If your JSON is valid, the formatted output will appear on the right. If there is an error (like a missing comma), the tool will tell you exactly what went wrong.

Frequently Asked Questions (FAQ)

What does JSON validation mean?

Validation means checking if your JSON syntax is correct according to standard rules. For example, keys must be in double quotes, and data types must be properly formatted. This tool highlights syntax errors so you can fix them.

Is my JSON data secure?

Yes, 100% secure. All formatting and validation happen directly in your browser using JavaScript. Your data is never uploaded to our servers, making it safe to use with sensitive configuration files.