JSON Formatter

Format, validate, and beautify JSON instantly! Pretty print, minify, and validate JSON with syntax highlighting.

Format, validate, and beautify JSON instantly! Pretty print with syntax highlighting, minify, and validate JSON with live feedback. ``` **Full Description:** ``` JSON Formatter - Beautify & Validate JSON Instantly! 🔧 Format, validate, and beautify JSON with ease! Perfect for developers working with APIs, config files, and JSON data. Features syntax highlighting, multiple indent options, and real-time validation. ✨ KEY FEATURES: 🎨 Formatting Options: - Pretty Print - Format JSON with proper indentation and line breaks - Minify - Compress JSON to single line for production use - Multiple Indent Styles - Choose 2 spaces, 4 spaces, or tabs - Syntax Highlighting - Color-coded output like VS Code - Beautiful Output - Dark theme editor with syntax colors ✓ Validation & Error Handling: - Real-time Validation - Instant JSON validation as you type - Clear Error Messages - Detailed error descriptions with line info - Visual Status Indicator - Valid (green), Invalid (red), or Empty (gray) - Error Display - Shows exactly what's wrong with your JSON - Live Feedback - Immediate validation updates 📊 Statistics & Analysis: - File Size - Shows bytes, KB, or MB automatically - Line Count - Number of lines in formatted output - Key Count - Total number of keys in JSON structure - Real-time Updates - Stats update with each format - Detailed Metrics - Understand your JSON structure 💾 Smart Features: - Auto-Save - Remembers your last JSON input across sessions - Paste from Clipboard - Quick paste button for convenience - Sample JSON - Load example JSON with one click - Copy Output - One-click copy formatted JSON to clipboard - Clear All - Quick reset to start fresh 🚀 HOW TO USE: Quick Start (3 Easy Steps): 1. Click the JSON Formatter extension icon 2. Paste or type JSON in the input editor 3. Click "✨ Format" to see beautified output - Done! Detailed Usage: Step 1: Input JSON - Click extension icon in toolbar - Paste JSON using "📋 Paste" button - Or type/paste directly in input editor - Or click "📝 Sample" for example JSON Step 2: Choose Formatting - Select indent style: 2 spaces, 4 spaces, or Tab - Default is 4 spaces (most readable) - Click different options to see changes - Preference is remembered Step 3: Format & Validate - Click "✨ Format" for pretty print - Click "📦 Minify" for single-line output - Watch status indicator for validation - See syntax-highlighted output Step 4: Copy Result - Click "📋 Copy" to copy formatted JSON - Paste anywhere you need it - Output preserves your chosen formatting - Original JSON saved automatically Error Handling: - Red status indicator shows invalid JSON - Error message displays below input - Shows what's wrong and where - Fix errors and re-format - Green status when valid Pro Tips: 💡 Use 2 spaces for compact, readable output 💡 Use 4 spaces for maximum readability (default) 💡 Use tabs for smallest file size 💡 Minify before sending over network 💡 Pretty print for development and debugging 💡 Check statistics to understand structure 💡 Use sample to learn JSON format 🎯 PERFECT FOR: 💻 Web Development: → Format API Responses - Beautify JSON from REST APIs → Debug JSON Data - Find errors in JSON structures → Config Files - Format package.json, tsconfig.json, etc. → Test Payloads - Prepare JSON for API testing → Code Examples - Create readable documentation 📊 Data Analysis: → Clean Data - Format messy JSON exports → Data Validation - Verify JSON structure → ETL Processes - Prepare data for transformation → Database Export - Format JSON database dumps → API Integration - Parse and format API responses 🔧 Backend Development: → API Development - Test request/response payloads → Configuration - Format server config files → Database Schema - Format NoSQL documents → Logging - Beautify JSON log files → Debugging - Find issues in JSON data 🎓 Learning & Teaching: → Learn JSON - Understand proper JSON syntax → Teaching Examples - Create clear code examples → Student Assignments - Validate student work → Tutorials - Format examples for courses → Documentation - Include in learning materials 💼 Professional Work: → Code Reviews - Format before committing code → Documentation - Include in technical docs → Presentations - Show JSON in slides clearly → Client Demos - Present data professionally → Technical Writing - Format JSON examples 🔍 Debugging & Testing: → API Testing - Validate request payloads → Response Analysis - Format API responses → Error Investigation - Find JSON syntax errors → Data Inspection - Examine JSON structures → Integration Testing - Prepare test data 📱 Mobile Development: → API Integration - Format mobile app API calls → Config Files - Beautify app configuration → Data Storage - Format local JSON storage → Push Notifications - Validate notification payloads → Feature Flags - Format feature configuration 🎨 FORMATTING STYLES: 2 Spaces (Compact): - Most compact while readable - Popular in JavaScript community - Saves file space - Good for code reviews - Example: Google style guide 4 Spaces (Standard - Default): - Most readable format - Industry standard - Clear visual hierarchy - Easier to spot errors - Recommended for beginners Tab Indentation: - Smallest file size - Editor-independent - Customizable width - Classic formatting - Good for minimizing size Minified (Production): - Single line output - No whitespace - Smallest possible size - Best for transmission - Use in production APIs 💡 VALIDATION FEATURES: Real-time Status: - ✓ Valid (Green) - JSON is syntactically correct - ✗ Invalid (Red) - JSON has syntax errors - Empty (Gray) - No JSON entered yet - Updates automatically as you type - Clear visual feedback Error Messages: - Shows exact error description - Indicates problem location - Explains what's wrong - Helps fix issues quickly - Clear, non-technical language Common Errors Detected: - Missing commas between elements - Trailing commas (not allowed in JSON) - Unclosed brackets or braces - Unescaped special characters - Invalid property names - Incorrect value types - Malformed strings 📊 STATISTICS EXPLAINED: File Size: - Calculated in bytes, KB, or MB - Shows formatted output size - Updates with each format - Helps optimize data transmission - Useful for API planning Line Count: - Number of lines in output - Helpful for code reviews - Understand structure complexity - Compare different formats - Track formatting changes Key Count: - Total number of JSON keys - Includes nested objects - Recursive calculation - Shows data complexity - Useful for optimization 🛡️ PRIVACY & SECURITY: 100% Local Processing: ✅ All formatting done in browser locally ✅ No external servers contacted ✅ No data transmission to backend ✅ No tracking or analytics ✅ No data collection whatsoever Data Storage: - Only last JSON input saved locally - Stored in browser storage only - Never sent to any server - Cleared when extension removed - Complete user control Permissions Used: - storage - Save last JSON input locally in browser - clipboardWrite - Copy formatted JSON to clipboard What We DON'T Do: ❌ No browsing history access ❌ No network requests ❌ No third-party services ❌ No advertisements ❌ No user tracking ❌ No data collection ❌ No external communication Your Privacy Matters: - Everything stays on your device - You control all data - Delete extension = delete all data - No trace left on servers - Completely private and secure ⚡ PERFORMANCE: Lightning Fast: ✅ Instant formatting (< 0.1 seconds) ✅ Real-time validation updates ✅ Minimal memory usage (< 5 MB) ✅ No browser slowdown ✅ Efficient JSON parsing ✅ Smooth user interface ✅ Quick copy operations Compatible With: ✅ All JSON formats ✅ Large JSON files (tested up to 10MB) ✅ Nested structures ✅ Arrays and objects ✅ All data types (string, number, boolean, null) ✅ Unicode characters ✅ Escaped characters Browser Support: ✅ Chrome (all versions) ✅ Chromium-based browsers ✅ Microsoft Edge ✅ Brave Browser ✅ Opera ✅ Vivaldi 📋 SYNTAX HIGHLIGHTING: VS Code Color Scheme: - Keys - Light Blue (#9cdcfe) - Strings - Orange (#ce9178) - Numbers - Light Green (#b5cea8) - Booleans - Blue (#569cd6) - Null - Blue (#569cd6) - Dark background (#1e1e1e) - Professional appearance Why Syntax Highlighting? - Easier to read JSON - Quickly spot data types - Find errors faster - Professional appearance - Matches popular editors - Reduces eye strain ❓ FREQUENTLY ASKED QUESTIONS: Q: What's the maximum JSON size I can format? A: The extension can handle large files (tested up to 10MB), but very large files may take longer to process. Q: Can this format invalid JSON? A: No, JSON must be syntactically valid to format. Use error messages to fix issues first. Q: Does this work offline? A: Yes! All processing is done locally in your browser. No internet required. Q: Can I format JSON from files? A: Yes, copy the file content and paste it into the extension. Q: Does this support JSON5 or JSONC (with comments)? A: No, only standard JSON format is supported. Comments will cause validation errors. Q: Can I customize the syntax highlighting colors? A: Not currently, but custom themes are planned for future updates. Q: Will formatting very large JSON slow down my browser? A: For extremely large files (10MB+), there may be a brief processing delay, but no lasting impact. Q: Does this preserve the order of keys? A: Yes, key order is preserved as it appears in the input. Q: Can I format multiple JSON objects at once? A: Currently one at a time, but batch processing is planned for future updates. Q: Does this handle escaped characters properly? A: Yes, escaped characters (\n, \t, \", etc.) are handled correctly. Q: Can I export formatted JSON to a file? A: Use the copy button, then paste into any text editor and save. Q: Does this work with JSON arrays? A: Yes! Both JSON objects {} and arrays [] are fully supported. 🌟 WHY CHOOSE JSON FORMATTER? ✓ Fast and instant formatting ✓ Beautiful syntax highlighting ✓ Real-time validation ✓ Multiple indent options ✓ Clear error messages ✓ Statistics and metrics ✓ Completely free forever ✓ No ads or premium tiers ✓ 100% privacy protection ✓ Works offline ✓ Regular updates ✓ Active support 🔄 COMING SOON: Planned Features (Future Updates): - JSON Schema Validation - Validate against custom schemas - Diff Comparison Tool - Compare two JSON objects - Tree View Mode - Collapsible hierarchical view - Search & Find - Search keys and values - JSON Path Finder - Get path to any value - Format Conversion - Convert to XML, YAML, CSV - Custom Themes - Light mode, dark mode, custom colors - History Manager - Save previous JSON inputs - Favorites/Bookmarks - Pin frequently used JSON - Import from Files - Direct file upload - Export Options - Save as formatted file - Batch Processing - Format multiple files - Sort Keys - Alphabetically sort object keys - Escape/Unescape - Handle escaped strings - Merge JSON - Combine multiple JSON objects - Split JSON - Extract parts of large JSON - Compress/Decompress - GZIP compression - Base64 Encode/Decode - Encode JSON data 💝 SUPPORT THE DEVELOPER: If you find this extension helpful and want to support continued development and improvements, you can buy me a coffee or send a donation: ☕ **Buy Me a Coffee:** https://buymeacoffee.com/wilsonwang 💎 **Solana Wallet Address:** A8VQWsQYWUw6HZFWwCrxGwDpxPGeXPZedyKNCUV6m6CC Your support helps: - Keep extension free for everyone - Add new features like schema validation - Implement diff comparison tool - Build tree view mode - Add format conversion (XML, YAML) - Provide ongoing maintenance - Fix bugs quickly - Respond to user feedback - Improve performance - Create better documentation Every contribution makes a real difference and helps thousands of developers work more efficiently with JSON! The "Buy Me a Coffee" button is visible in the extension for easy support. Thank you for your support! 🙏 --- Format JSON beautifully and validate instantly! 🔧✨ Download now and make JSON readable! ```