JSON Formatter
Beautify, minify and validate JSON data in one click.
Input JSON
Output
About JSON Formatter
Paste any JSON data and instantly beautify it with proper indentation, or minify it to remove whitespace for production use. The Sort Keys option alphabetizes all object keys recursively. Validation errors are shown with the exact line and character position.
What is a JSON Formatter & Beautifier?
A JSON Formatter (also called JSON Beautifier or JSON Prettifier) takes minified or unreadable JSON data and adds proper indentation, line breaks, and spacing to make it human-readable. It also validates your JSON and highlights syntax errors instantly.
Common Use Cases
Debugging API responses from REST or GraphQL APIs
Reading minified JSON configuration files
Formatting JSON before committing to version control
Validating JSON data structures in development
Converting JSON to a readable format for documentation
Tips & Best Practices
Use 2-space indentation for web projects and 4-space for most other languages
The Sort Keys option helps you spot duplicate keys immediately
Minify JSON before sending API requests to reduce payload size
Valid JSON requires double quotes — single quotes will fail validation
Frequently Asked Questions
What is JSON?▼
JSON (JavaScript Object Notation) is a lightweight data format used to exchange data between servers and web applications. It uses key-value pairs and supports strings, numbers, booleans, arrays, and objects.
Why is my JSON invalid?▼
Common causes: missing quotes around keys, trailing commas after the last item, using single quotes instead of double quotes, or unescaped special characters in strings.
What is the difference between JSON beautify and minify?▼
Beautify adds whitespace and indentation to make JSON readable. Minify removes all unnecessary whitespace to make the file smaller and faster to transmit over networks.
Is my JSON data safe?▼
Yes — all processing happens entirely in your browser. Your JSON data is never sent to any server.