JSON Formatter & Validator
Format, validate, and minify JSON data
Examples
Frequently Asked Questions (FAQ)
What is JSON?
JSON (JavaScript Object Notation) is a lightweight text-based format for storing and transmitting data. It consists of key-value pairs and is both human-readable and machine-parseable.
Why do I need JSON formatting?
API responses and configuration files often contain minified JSON displayed as a single line. Formatting adds indentation and line breaks, making the structure easy to understand.
When should I use Minify?
Use minify when sending JSON data via API or when you need to reduce file size. It removes whitespace and line breaks to minimize data size.
Why does JSON validation fail?
Common causes:
- Missing commas or trailing commas (after the last item)
- Using single quotes (') instead of double quotes (")
- Missing quotes around key names
- Mismatched braces () or brackets ([])
How do I handle UTF-8 encoding issues?
JSON uses UTF-8 encoding. If special characters appear broken, verify your file is saved as UTF-8. This tool processes everything in your browser, so encoding issues don't occur.
Is my data secure?
Yes! All processing happens only in your browser. Your JSON data is never sent to our servers and is not stored anywhere.