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JSON Formatter

Valid JSON
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About Just Formatter

Use our powerful JSON Formatter, JSON Validator, and JWT Decoder to format and beautify JSON, validate JSON structure for errors, and decode JWT tokens instantly for secure debugging and analysis.

Our Philosophy

Simple tools should be free, fast, and accessible to everyone.

Key Features

⚡

Instant Formatting

Reformat messy JSON with perfect indentation in milliseconds.

🔍

JWT Debugging

Decode and inspect JWT tokens with full header/payload details.

🔒

No Data Storage

All processing happens in your browser - we never see your data.

✓

Syntax Validation

Detect and highlight JSON syntax errors with line numbers.

🎉

Zero Cost

100% free tools with no hidden paywalls or limitations.

Why Use Just Formatter?

✓No account registration required
✓Works with large JSON files (up to 10MB)
✓Clean, ad-free interface
✓Keyboard shortcuts for power users
✓Regularly updated with new features
✓Open-source foundation

Developer Friendly

Just Formatter is built with modern web technologies to ensure:

  • • Instant loading with no dependencies
  • • Mobile-responsive design
  • • Copy-paste friendly output
  • • Download formatted results

Frequently Asked Questions

Is my data secure when using JustFormatter?

Absolutely! All processing happens directly in your browser. We never send your data to our servers.

Do I need to install anything?

No installation required. Just Formatterworks entirely in your web browser.

Can I use these tools offline?

Currently you need an internet connection to load the tools, but we're working on PWA support.

Are there any usage limits?

No limits! Use our tools as much as you need, completely free.

How can I report a bug or request a feature?

Please mail us: justformatter25@gmail.com.