JSON Formatter & Validator
Paste your JSON below and click “Format JSON” to prettify and validate it. If there is an error, you’ll see the error message.
Input JSON
Formatted JSON
What is JSON Formatter & Validator?
JSON (JavaScript Object Notation) is a lightweight data format widely used for transmitting data between a server and a web application. A JSON formatter takes raw or minified JSON and arranges it with proper indentation so it is easy to read. This tool also validates your JSON, instantly highlighting syntax errors such as missing commas, unmatched brackets, or incorrect quotes. It is essential for developers working with APIs, configuration files, and databases.
How to Use
- Paste your raw or minified JSON into the "Input JSON" text area.
- Click "Format JSON" to prettify it with indentation, or "Minify" to compress it into a single line.
- If your JSON is valid, the formatted output appears on the right. If there are errors, the error message is displayed below the input.
- Click "Copy formatted JSON" to copy the result to your clipboard.
Frequently Asked Questions
What are common JSON errors?
The most common errors include trailing commas after the last item in an array or object, using single quotes instead of double quotes for strings, and missing closing brackets or braces. This tool will point out the exact location of the error.
Why should I minify JSON?
Minified JSON removes all whitespace and line breaks, reducing file size. This is useful when sending JSON data over a network or embedding it in API requests where smaller payloads lead to faster performance.
Is my JSON data secure?
Yes. All formatting and validation happens entirely in your browser. Your JSON data is never sent to any server, making this tool safe for use with sensitive or proprietary data.
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