JSON Formatter & Pretty Print

What is JSON formatting and why do I need it?

JSON formatting adds proper indentation, line breaks, and spacing to make JSON data readable. Minified JSON is compact but hard to read, while formatted JSON is easier to debug and understand.

What's the difference between Format and Minify?

Format adds indentation and line breaks for readability. Minify removes all unnecessary whitespace to reduce file size. Use Format for development/debugging, Minify for production/transmission.

How does the Sort Keys option work?

Sort Keys alphabetically orders all object properties in the JSON. This makes it easier to find specific properties and creates consistent formatting for version control and comparisons.

What does the tool do when JSON is invalid?

The tool validates your JSON and shows detailed error messages if syntax is incorrect. Common errors include missing quotes, trailing commas, or unmatched brackets. Error messages help you locate and fix issues.

What indent sizes are available and which should I use?

Choose from 2 spaces, 4 spaces, 8 spaces, or tabs. 2 spaces is most common for web development, 4 spaces for general programming. Tabs offer flexibility but may display inconsistently across editors.

Is my JSON data safe when using this tool?

Yes! All JSON formatting happens locally in your browser using JavaScript. Your data is never uploaded to servers or transmitted anywhere. The tool works completely offline.

Can I format large JSON files?

The tool can handle most JSON files, but very large files (>10MB) may slow down your browser. For huge files, consider using command-line tools or splitting the data into smaller chunks.

How do I copy the formatted JSON?

Click the "Copy" button next to the output area to copy formatted JSON to your clipboard. You can then paste it into your code editor, API client, or anywhere you need it.

🔧 API Development

Format API responses for debugging, validate request payloads, and pretty-print JSON for documentation.

📝 Code Review

Format JSON files before committing to version control for better readability and diff comparison.

🐛 Debugging

Make complex nested JSON structures readable to identify data issues and validate structure.

📊 Data Analysis

Format JSON datasets for analysis, sort keys for consistency, and validate data integrity.

⚡ Performance Optimization

Minify JSON for production to reduce bandwidth and improve loading times in web applications.

📚 Learning & Teaching

Format JSON examples for tutorials, documentation, and educational materials about data structures.