{ } JSON Formatter & Validator
Validate, prettify, and minify JSON with error detection
Understanding JSON
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 and generate. It's widely used in web APIs, configuration files, and data storage.
Prettify vs Minify
Prettifying adds indentation and line breaks to make JSON readable for humans during development and debugging. Minifying removes all unnecessary whitespace to reduce file size for production use and faster data transmission.
Common JSON Errors
Common JSON errors include missing commas between properties, trailing commas, unquoted property names, single quotes instead of double quotes, and unclosed brackets or braces. Our validator provides clear error messages to help you identify and fix these issues quickly.
How to Use This Tool
- Paste your JSON data into the input field above
- Click "Prettify" to format with proper indentation for readability
- Click "Minify" to remove all whitespace and reduce file size
- Click "Validate" to check for syntax errors without formatting
- Use the Copy button to copy the result to your clipboard, or Download to save as a .json file
Frequently Asked Questions
What is JSON formatting?
JSON formatting (prettifying) adds proper indentation and line breaks to make JSON data human-readable. Minifying removes all unnecessary whitespace to reduce file size.
How do I validate JSON?
Paste your JSON into the input field and click 'Validate'. Our tool will check for syntax errors and provide detailed error messages if issues are found.
Is this tool free to use?
Yes, this JSON formatter is completely free to use with no registration or limits.
Is my JSON data private?
Yes, all JSON processing happens entirely in your browser. Your data is never sent to our servers.
Does this work on mobile devices?
Yes, this tool is fully responsive and works on all mobile devices, tablets, and desktop computers.