JSONFormatter: JSON Tool

JSONFormatter is a fast, privacy-first JSON utility that works completely offline.
No internet, no account, and no data collection. Everything runs locally on your device.

Key Features

• Beautify and format JSON with custom indentation (2 spaces, 4 spaces, tabs)
• Minify JSON by removing whitespace for compact output
• Real-time JSON validation with clear error messages
• One-tap actions: copy, clear, undo, redo
• Local history so you never lose your work
• Convert JSON to XML
• Useful stats like character count and line count

Privacy First

• Works 100% offline
• No data collection or tracking
• No ads and no third-party SDKs
• No permissions required
• Safe for all users, including students

Designed for Developers

• Clean Material Design 3 interface
• Light, dark, and system theme support
• Monospace font for better readability
• Fast performance even with large JSON files
• Share formatted output using Android’s system share

Common Use Cases

• Format messy API responses
• Validate configuration files
• Minify JSON for production
• Learn and understand JSON structure
• Quick JSON edits on mobile

Technical Details

• Android 5.0 (API 21) and above
• App size under 5MB
• Optimized for phones and tablets

JSONFormatter is built by developers who value speed, simplicity, and privacy.
No subscriptions, no hidden costs — just a reliable JSON tool that does its job.