JSON Formatter
Validate, format, and minify.
VALID JSON
167 chars13 lines
Free online tool to format, validate, and minify JSON data. Features syntax highlighting, error detection, tree view visualization, and instant formatting—all in your browser with no data sent to servers.
How to Use This JSON Formatter
- 1Paste your JSON data into the input area, or type it directly
- 2The tool automatically validates your JSON and highlights any syntax errors
- 3Click 'Format' to beautify with proper indentation, or 'Minify' to compress
- 4Use the tree view to explore nested structures visually
- 5Copy the formatted result or download as a file
Features
- ✓Real-time JSON validation with error messages
- ✓Syntax highlighting for better readability
- ✓Tree view for visual exploration
- ✓One-click minification for production use
- ✓Adjustable indentation (2 or 4 spaces)
- ✓100% client-side processing (your data stays private)
- ✓No signup or account required
- ✓Works offline after first load
What is JSON?
JSON (JavaScript Object Notation) is a lightweight, human-readable data format used for storing and exchanging data between servers and web applications. It's language-independent and widely used in APIs, configuration files, and data storage. JSON structures data using key-value pairs and arrays, making it easy to represent complex hierarchical information.