JSON Formatter & Validator
Format, validate, and beautify JSON with syntax highlighting. All processing happens in your browser.
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Press Ctrl+Enter (Cmd+Enter on Mac) to format
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Quick Examples
About JSON Formatter
JSON (JavaScript Object Notation) is a lightweight data interchange format that ' s easy for humans to read and write. Our JSON formatter helps you validate, format, and beautify JSON data instantly in your browser.
Features
- Real-time JSON validation with detailed error messages
- Beautiful syntax highlighting with dark mode support
- Format (prettify) or minify JSON with one click
- Copy formatted JSON to clipboard
- Download formatted JSON as a file
- Keyboard shortcuts for faster workflow (Ctrl/Cmd + Enter to format)
- 100% client-side - your data never leaves your browser
- Works offline once loaded
How to Use
- Paste or type your JSON in the input area
- Click "Format JSON" to beautify or " Minify " to compress
- Copy the formatted result or download as a file
- Use keyboard shortcuts: Ctrl+Enter (Windows) or Cmd+Enter (Mac) to format quickly
Common Use Cases
- Debugging API responses
- Formatting configuration files
- Validating JSON before deployment
- Converting between minified and readable formats
- Learning JSON structure and syntax