JSON Formatter
Format, validate, and minify JSON data instantly. Everything runs locally in your browser.
Input
Output
Formatted output will appear here
JSON Formatter
JSON Formatter formats, validates, and minifies JSON data with syntax error detection.
Key Features
- Pretty-print and minify JSON
- Syntax error detection and highlighting
- Expand and collapse JSON nodes
- Copy formatted or minified output
How to Use
- Paste your JSON data into the input area
- The tool auto-formats and validates the JSON
- Use the toolbar to switch between formatted and minified output
Frequently Asked Questions
What happens if my JSON has syntax errors?
The tool highlights the exact location of syntax errors with line and column numbers, making it easy to fix issues.
Can I collapse nested objects?
Yes. Click the arrows next to objects and arrays to expand or collapse nested nodes.
Is there a file size limit?
The tool handles large JSON files, but very large files (10MB+) may slow down the browser. For best results, keep files under 5MB.