JSON Formatter & Validator
Format, beautify, and validate JSON data instantly. Free online tool with syntax highlighting.
Enter JSON above and click Format, Minify, or Validate
Free JSON Formatter & Beautifier Online
Our free JSON formatter helps you instantly format, beautify, and validate JSON data. Whether you're a developer debugging API responses, a data analyst working with JSON files, or anyone who needs to make JSON readable, this tool provides instant results with no signup required.
The JSON beautifier transforms minified or poorly formatted JSON into clean, indented, human-readable code. You can also minify JSON to reduce file size or validate JSON to check for syntax errors.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write, and easy for machines to parse. It's widely used for APIs, configuration files, and data storage across virtually all programming languages.
How to Use the JSON Formatter
- Paste JSON: Enter or paste your JSON data into the input field
- Choose Indent: Select 2 spaces, 4 spaces, or tab indentation
- Format: Click "Format" to beautify your JSON with proper indentation
- Copy: Use the copy button to save the formatted output
Features
Pretty-print JSON with customizable indentation
Compress JSON by removing whitespace
Check JSON syntax and find errors
Easy on the eyes with syntax highlighting
Frequently Asked Questions
Is this JSON formatter free?
Yes! Our JSON formatter is 100% free with no limits on usage. No signup or login required.
How do I format JSON online?
Simply paste your JSON into the input field and click "Format". The tool will instantly beautify your JSON with proper indentation.
What is JSON minification?
JSON minification removes all unnecessary whitespace and newlines to create the smallest possible file size. This is useful for reducing bandwidth in API responses.
Why is my JSON invalid?
Common JSON errors include missing quotes around keys, trailing commas, single quotes instead of double quotes, or unescaped special characters. Use our validator to identify the exact error.
Is my data secure?
Yes! All processing happens in your browser. Your JSON is never sent to any server or stored anywhere.