View, format, edit, expand/collapse, drag & drop, and export JSON with advanced features in Chrome.
Users
28
β1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#134K
#111K among extensions
Version
7.1
updated 8 Oct 2025
Users
monthly, 14 months
Latest, 16 Oct 2026:28 usersMove the mouse over the chart for any month
Ratings count
monthly, 14 months
Latest, 16 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About JSON Viewer Pro Expand,Editor,Auto,Drag-Drop,Output Dump 2 json By PatilWeb
View, format, edit, expand/collapse, drag & drop, and export JSON with advanced features in Chrome and support output from 6+ programming languages, making us the only extension you need for any data format.
β¨ Features
π¨ Beautiful JSON Formatting: Syntax highlighting with collapsible objects and arrays
π Auto-Detection: Automatically detects JSON content on web pages
π Dark/Light Theme: Toggle between light and dark themes
π Copy to Clipboard: Easy copying of formatted JSON data
π JSON Analysis: Shows object count, array count, and file size
β‘ Real-time Validation: Instant JSON validation and error reporting
π― Context Menu Integration: Right-click options for JSON operations
π§ Customizable Settings: Auto-format, syntax highlighting, and collapsible options
β‘ Works on any valid JSON page even on local files too
π§ Smart JSON Detection: Automatically detects JSON content on web pages
π JSON Analysis: Shows object count, array count, and file size
β‘ Real-time Validation: Instant JSON validation and error reporting
π― Context Menu Integration: Right-click options for JSON operations
π Internal JSON Viewer: Dedicated page for pasting and formatting raw JSON data
π File Upload Support: Drag & drop or browse for JSON files
π― Smart UI: JSON-specific controls appear only when JSON is detected on the page
π Expand/Collapse All: Toggle visibility of all JSON nodes at once
β¨οΈ Keyboard Shortcuts: Quick actions with keyboard combinations
Internal JSON Viewer
Click "π Open JSON Viewer" in the extension popup
Opens a dedicated page for pasting and formatting raw JSON
Features:
Split-panel interface (input/output)
π File Upload: Click "Open File" to select JSON files from your computer
π― Drag & Drop: Simply drag JSON files directly into the input area
Real-time JSON validation and formatting
Live statistics (size, objects, arrays, properties)
Sample JSON loader for testing
Full expand/collapse functionality
Dark/Light theme toggle
Keyboard shortcuts: Ctrl+Enter (format), Ctrl+Shift+E (expand all)
File Support: .json and .txt files (up to 10MB)
β Auto-format JSON: Automatically format detected JSON
π¨ Syntax highlighting: Enable/disable color coding
π Collapsible objects: Make objects and arrays collapsible
π Dark theme: Switch between light and dark themes
β¨ Key Features
π **Intelligent Auto-Detection**
- **Smart JSON Recognition**: Automatically detects and formats JSON content on any webpage
- **Programming Language Support**: Recognizes and converts output from popular language
- **Mixed Content Handling**: Processes multiple JSON elements on the same page individually
- **Context-Aware Processing**: Distinguishes between single JSON pages and mixed content
π¨ **Professional Formatting**
- **Beautiful Syntax Highlighting**: Color-coded JSON with proper indentation
- **Collapsible Structures**: Expand/collapse nested objects and arrays
- **Type-Specific Styling**: Visual distinction between strings, numbers, booleans, and null values
- **Dark/Light Theme Support**: Seamless integration with your preferred theme
βοΈ **Advanced JSON Editor**
- **Real-Time Editing**: Live JSON editor with instant validation
- **Syntax Validation**: Real-time error detection with helpful error messages
- **Auto-Formatting**: One-click JSON beautification and formatting
- **Apply Changes**: Update displayed content directly from the editor
- **Error Prevention**: Disabled save functionality for invalid JSON
π οΈ **Developer-Friendly Tools**
- **Copy Functionality**: One-click copying of formatted JSON
- **View Original**: Switch between formatted and original content
- **Full Formatter Mode**: Open complex JSON in a dedicated viewer
- **Manual Trigger**: Force formatting when auto-detection is disabled
- **Export Options**: Save formatted JSON to files
π **Programming Language Output Conversion**
π― **Python Output Support**
- Converts `True`/`False`/`None` to JSON equivalents
- Handles single-quoted strings and dictionary syntax
- Supports complex nested Python structures
π― **JavaScript Console Output**
- Processes `Object { }` and `Array(3) [ ]` formats
- Handles `console.log` output from browsers
- Converts `undefined` to `null` appropriately
π― **PHP var_dump Output**
- Parses PHP array and object dumps
- Converts PHP type annotations to JSON
- Handles nested PHP structures
π― **Java Object Output**
- Processes HashMap and ArrayList toString formats
- Handles Java object notation like `User{id=1, name=Alice}`
- Converts Java collections to JSON arrays
π― **C# Object Output**
- Supports C# property syntax
- Handles List collections and anonymous objects
- Converts C# specific types to JSON
π― **Ruby Object Output**
- Processes Ruby hash syntax with symbols
- Handles `:key => value` notation
- Converts Ruby arrays and nested structures
π― **Smart Placement & Performance**
- **Conservative Placement**: Places formatters exactly where content appears
- **No Page Disruption**: Preserves original page functionality
- **Performance Optimized**: Handles large JSON files efficiently
- **Error Resilience**: Graceful handling of malformed content
- **Memory Efficient**: Minimal resource usage
π― π§ **Customization & Settings**
- **Auto-Format Toggle**: Enable/disable automatic formatting
- **Syntax Highlighting**: Toggle color coding
- **Collapse Settings**: Control default expand/collapse behavior
- **Theme Preferences**: Choose between dark and light themes
- **Manual Control**: Override auto-detection when needed
π― π± **User Experience**
- **Drag & Drop Support**: Drop JSON files directly onto pages
- **File Size Limits**: Smart handling of large files (up to 10MB)
- **Loading Indicators**: Visual feedback during processing
- **Keyboard Shortcuts**: Efficient navigation and control
- **Responsive Design**: Works on all screen sizes
π― π **Perfect For**
π― **Web Developers**
- API response debugging and analysis
- JSON configuration file editing
- Database query result formatting
- REST API testing and validation
π― **Dβ¦
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
β1
β3.4%
0
0.00
6 months
+3
+12.0%
0
0.00
1 year
+12
+75.0%
0
0.00
Chrome Web Store search rankings
Where JSON Viewer Pro Expand,Editor,Auto,Drag-Drop,Output Dump 2 json By PatilWeb appears when people search the store, with the 30 day change