Fossa Technology

Free Online JSON Viewer

Visualize, format, and explore JSON data with a beautiful, interactive UI. Paste, edit, and instantly view your JSON as a collapsible tree.

JSON Viewer

name:"John Doe"
age:30
address:
hobbies:
isActive:true
metadata:
Size:463 chars
Type:Object
Keys:6
Valid:✓ Valid JSON

👁️ Why Use Our JSON Viewer Tool?

Our free online JSON viewer helps developers, analysts, and data professionals work with JSON data more effectively. Whether you're debugging API responses, analyzing complex data structures, or just need to format messy JSON, our tool provides the visualization and functionality you need.

🌳
Visual Exploration
  • Collapsible tree structure for easy navigation
  • Color-coded syntax highlighting
  • Clear indentation and formatting
⚡
Powerful Features
  • Full-text search across keys and values
  • One-click copy functionality
  • Real-time validation with error highlighting

👥 Who Uses JSON Viewer Tools?

💻
Frontend Developers
Inspect API responses and debug JSON data structures
🖥️
Backend Engineers
Validate and format JSON payloads before sending
📊
Data Analysts
Explore and understand complex JSON datasets

⭐ Key Features of Our JSON Viewer

  • • Interactive, collapsible JSON tree
  • • Syntax highlighting for all data types
  • • Search and filter keys/values
  • • Copy, format, minify, and download JSON
  • • Real-time error detection and validation
  • • Dark mode support

⚙️ How to Use the JSON Viewer Tool

  1. Paste or type your JSON data into the input area
  2. Use the toolbar to format, minify, or download your JSON
  3. Explore the tree view and use search to find keys/values
  4. Copy or validate your JSON as needed

📁 Common JSON Use Cases

  • • Debugging API responses
  • • Formatting and sharing JSON data
  • • Validating and visualizing large JSON files
  • • Learning and teaching JSON structure

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