JSON Viewer Plus - 20+ Themes & Auto Formatter

About

🚀 THE MOST BEAUTIFUL & VERSATILE JSON VIEWER FOR CHROME

JSON Viewer Plus is a powerful JSON formatter, beautifier, and parser designed for developers, API testers, and data analysts. Transform messy JSON into beautiful, readable code with 20+ premium themes. Now with a standalone paste tool - format JSON without opening URLs!

🆕 NEW IN v1.2

✨ Standalone JSON Viewer - Paste & format JSON directly in the extension popup without needing a URL
🎨 Redesigned Modern Interface - Sleek, intuitive UI for better user experience
⚡ Improved Performance - Faster rendering and smoother interactions

✨ KEY FEATURES

🎨 20+ Premium Themes
- Light and dark mode support
- Monokai, Dracula, Solarized, Nord, and 17+ more
- One Dark, GitHub, VS Code, Material themes
- System theme auto-detection
- Customizable color schemes

📋 Dual Mode Operation
- Auto-detect & format JSON in browser tabs (classic mode)
- Paste JSON directly in popup - no URL needed (NEW!)
- Perfect for quick formatting, API responses, log snippets
- Copy formatted or minified output instantly
- Share formatted JSON with colleagues

⚡ Smart Auto-Formatting
- Auto-detects JSON in any browser tab
- Instant pretty print and beautification
- Syntax highlighting for easy reading
- Configurable indentation (2/4 spaces or tabs)
- Automatic line numbers
- Fast rendering even for large JSON files
- Lightning-fast performance improvements in v1.2

🛠️ Developer Power Tools
- JSONPath display on hover - see exact data location
- HTTP headers viewer for API debugging
- Timestamp addition for accurate tracking
- Clickable URLs (automatically detected and linkified)
- Fold/unfold JSON objects & arrays with one click
- Array size display for quick insights
- Copy formatted or minified JSON
- Modern, redesigned interface for better workflow

🔍 NAVIGATION & SEARCH
- Collapsible tree structure for complex JSON
- Navigate nested objects effortlessly
- Indent guides for better readability
- Quick expand/collapse all sections
- Easy-to-scan structure

📊 PERFECT FOR
- Quick JSON formatting - just paste and go!
- REST API testing and debugging
- JSON file analysis and validation
- Web development and data parsing
- Log file inspection
- API response verification
- JSON schema validation
- Database query results
- Configuration file editing
- Sharing formatted JSON with team members
- Validating JSON snippets from documentation

🎯 WHY CHOOSE JSON VIEWER PLUS?

✅ Paste Tool - Format JSON without opening URLs (NEW in v1.2!)
✅ Modern UI - Beautiful redesigned interface (NEW in v1.2!)
✅ Faster - Improved performance (NEW in v1.2!)
✅ Works Offline - No internet connection required
✅ Privacy First - No tracking, no analytics, zero data collection
✅ Lightweight - Negligible performance impact on non-JSON pages
✅ Universal - Works on any valid JSON page, URL doesn't matter
✅ 100% Free - No ads, no premium upsells, completely free forever

⚙️ SMART FEATURES

Standalone Paste Tool (NEW!)
Open the extension popup, paste any JSON, and instantly format it. No need to open URLs or create test files. Perfect for:
- Formatting API responses from Postman/Insomnia
- Validating JSON snippets from documentation
- Cleaning up messy log data
- Sharing formatted JSON with colleagues
- Quick JSON validation during development

Automatic Content Detection
Instantly recognizes JSON content in browser tabs and formats it automatically. No manual action needed.

Clickable Links
All URLs in your JSON are automatically converted to clickable links, streamlining your workflow.

Professional Formatting
Choose your preferred code style with customizable indentation levels. Perfect for teams with coding standards.

HTTP Headers Display
View HTTP headers directly alongside your JSON data, providing essential context for API debugging and troubleshooting.

Modern Redesigned Interface
Enjoy a sleek, intuitive UI that makes JSON formatting a pleasure. Clean design, better performance, enhanced usability.

🚀 GETTING STARTED

**Method 1: Paste & Format (NEW!)**
1. Click the JSON Viewer Plus icon in your toolbar
2. Paste your JSON in the popup
3. Instantly see formatted, highlighted output
4. Copy, download, or customize theme

**Method 2: Auto-Format URLs**
1. Open any JSON URL in Chrome
2. Watch it automatically format and beautify
3. Customize your theme from 20+ options
4. Hover over any element to see its JSONPath

📝 TRY IT NOW - EXAMPLE JSON URLS

Test JSON Viewer Plus on these live JSON endpoints:

- https://api.github.com/users
- https://jsonplaceholder.typicode.com/posts
- https://api.github.com/repos/microsoft/vscode
- https://dummyjson.com/products/1


Or simply paste this JSON in the popup:
{"name":"Test","version":"1.2","features":["paste","format","beautify"]}

⚡ PERFORMANCE

- Lightning-fast parsing and rendering (NEW v1.2 optimizations!)
- Handles large JSON files
- Less than 1 millisecond impact on non-JSON pages
- Efficient memory usage
- No background processes
- Smoother interactions and faster UI response

🔒 PRIVACY & SECURITY

We take your privacy seriously:
- Zero data collection or tracking
- No analytics or telemetry
- No external server communication
- All processing happens locally in your browser
- Your pasted JSON never leaves your machine
- No permissions abuse

🎓 ADVANCED FEATURES

Standalone JSON Editor
The new paste tool isn't just for viewing - edit JSON directly in the popup, validate structure, and copy clean output.

JSONPath Reference
Hover over any JSON element to see its exact JSONPath location. Perfect for documentation and API integration.

Fold/Unfold Control
Click any object or array to fold/unfold it. Focus on the data you need while keeping large JSON files manageable.

Timestamp Tracking
Add timestamps to your JSON data for debugging time-sensitive issues and tracking data changes.

Raw & Formatted Views
Toggle between beautifully formatted JSON and raw source. Perfect for copying data or debugging parser issues.

💡 PRO TIPS

- Use the paste tool for quick JSON formatting - no URLs needed!
- Use Ctrl/Cmd + Click to collapse all sibling elements
- Switch themes to match your IDE or workflow
- Enable line numbers for easy reference in documentation
- Use JSONPath for precise API endpoint documentation
- Fold large arrays to focus on structure first
- Copy formatted JSON from paste tool directly to your code

🆚 COMPARED TO OTHER JSON VIEWERS

Unlike basic JSON formatters, JSON Viewer Plus offers:
✓ Standalone paste tool - format without URLs (UNIQUE!)
✓ Modern redesigned interface (NEW v1.2!)
✓ Improved performance (NEW v1.2!)
✓ 20+ themes vs 1-2 themes in other extensions
✓ JSONPath display on hover
✓ HTTP headers viewer
✓ Timestamp addition
✓ Professional-grade syntax highlighting
✓ Automatic link detection and clickable URLs
✓ Array size indicators
✓ Configurable indentation styles

📦 INSTALLATION TIPS

To enable JSON Viewer Plus on local files:
1. Right-click the extension icon
2. Select "Manage Extension"
3. Enable "Allow access to file URLs"

For Incognito Mode:
1. Go to chrome://extensions
2. Find JSON Viewer Plus
3. Enable "Allow in Incognito"

🐛 SUPPORT & FEEDBACK

Found a bug? Have a feature request?
- GitHub Issues: https://github.com/rezmoss/jsonviewerplus


We actively maintain and improve JSON Viewer Plus based on user feedback. Your suggestions help make it better for everyone!

📋 TECHNICAL DETAILS

- Supports large files 
- UTF-8 encoding support
- Cross-origin request compatible
- Content Security Policy compliant
- Standalone paste tool with instant validation

🎉 INSTALL NOW - IT'S 100% FREE

Transform messy JSON into beautiful, readable code - instantly paste or auto-format URLs!

📅 VERSION HISTORY

v1.2 (Latest)
- Added standalone JSON paste tool
- Redesigned modern interface
- Performance improvements

v1.1
- 20+ theme options
- JSONPath support
- HTTP headers display

v1.0
- Initial release
- Auto-format & syntax highlighting