JSON Formatter
Format, validate and compress JSON. Client-side only.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data format used extensively in web development for APIs, configuration files, and data storage. This tool helps you format, validate, and minify JSON instantly without any installation.
✨ Features:
- ✅ Format JSON with proper indentation
- ✅ Validate JSON syntax and find errors
- ✅ Minify JSON to reduce file size
- ✅ Works 100% in your browser
- ✅ No data ever sent to servers
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Frequently Asked Questions
What's the difference between formatting and minifying?
Formatting adds indentation and line breaks for readability. Minifying removes all unnecessary whitespace to reduce file size for production use.
Is my JSON data secure?
Yes, 100% secure! All processing happens in your browser. We never send data to any server, so your information stays completely private.
Can I handle large JSON files?
Yes, most JSON files up to 50MB work fine. For extremely large files (100MB+), processing may take a few seconds depending on your device.
Does this tool work offline?
Yes! After the page loads, all tools work completely offline. You don't need an internet connection to use the formatter, validator, or minifier.
What should I do if validation fails?
The validator will show you the exact line and column where the error is. Common issues: single quotes instead of double quotes, trailing commas, unquoted keys, or missing commas between properties.