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JSON formatter • JSON prettifier • JSON beautifier desktop app. Format messy JSON files instantly. Free JSON viewer and organizer for Windows, macOS, Linux.

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JSON Prettier

JSON Prettier Logo

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Main Interface Main Interface Dark Theme Dark Theme Settings Panel Settings Panel

📥 Download

macOS Users: You may see security warnings like "untrusted developer" or "app is damaged" on first launch. Try right-clicking the app and selecting "Open" first. If that doesn't work, see our Installation Guide for the terminal solution.


📝 What is JSON Prettier?

JSON Prettier is a simple desktop app that makes messy JSON data look clean and organized. Whether you're a developer, data analyst, or just someone who works with JSON files, this app will help you format and read JSON data easily.

✨ Features

  • 📂 Open JSON files - Load JSON from your computer
  • 💾 Save formatted JSON - Export cleaned up data
  • 🔄 Auto-save settings - Remembers your preferences
  • 🌙 Dark/Light themes - Choose your preferred look
  • 📋 Copy/Paste support - Quick text operations
  • 🎨 Syntax highlighting - Easy to read colored JSON
  • Fast formatting - Instant JSON beautification

🐛 Something Not Working?

Found a problem? Let us know! Go to our Issues page and tell us:

  • What computer you're using (Mac, Windows, Linux)
  • What version of the app you have
  • What you were trying to do
  • What happened vs what you expected
  • A screenshot if possible

🛠️ For Developers

Want to contribute or build from source? Check out our Development Guide

⭐ If you find this project useful, please give it a star!

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JSON formatter • JSON prettifier • JSON beautifier desktop app. Format messy JSON files instantly. Free JSON viewer and organizer for Windows, macOS, Linux.

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