Json Viewer

Transform raw JSON into something beautiful.

JSON Viewer is a high-performance Chrome extension that makes JSON readable, navigable, and editable - right in your browser.

✨ FIVE VIEW MODES
• Tree View - Collapsible nodes with syntax highlighting. Perfect for exploring nested structures.
• Editor View - Full-featured JSON editor with line numbers, formatting, and validation.
• Schema View - Visualize data types and structure at a glance.
• YAML View - Instant JSON-to-YAML conversion for config files.
• Raw View - Original JSON string with easy copy option.

🔍 POWERFUL SEARCH
• Search across keys and values
• Real-time highlighting as you type
• Navigate matches with Enter / Shift+Enter
• Regex support for advanced queries

⚡ PERFORMANCE OPTIMIZED
• Lazy rendering - Only visible nodes hit the DOM
• Batched processing - Prevents UI blocking on large files
• View caching - Instant tab switching
• Handles 100,000+ nodes smoothly

🛠️ DEVTOOLS INTEGRATION
• Dedicated JSON Viewer panel in Chrome DevTools
• Monitor network requests with JSON responses
• Click any request to view formatted JSON
• Filter requests by URL or content type

⌨️ KEYBOARD SHORTCUTS
• Ctrl/⌘+F - Focus search
• Ctrl/⌘+C - Copy JSON
• Ctrl/⌘+S - Save to file
• Ctrl/⌘+D - Toggle theme

🌙 WORKS EVERYWHERE
• Auto-detects JSON in browser tabs
• Supports JSONL and NDJSON files
• Local files - Open .json files directly
• Context menu - Right-click selected text → "View JSON Snippet"
• Light & dark themes - Matches system preference

🔒 PRIVACY
100% offline. Your data is processed locally and never sent anywhere. No tracking. No analytics. No servers.

Free. Open source. No ads. Just JSON, done right.
https://github.com/kunalbabre/JsonViewer