Simple JSONView — simple-jsonview

This lightweight Mozilla Firefox extension helps developers view and analyze JSON responses directly in the browser with improved readability and organization. Instead of displaying raw, compressed JSON data in a difficult-to-read format, the extension automatically formats and structures the content into a clean, developer-friendly layout for faster debugging and API inspection.

Designed for frontend developers, backend engineers, testers, and API users, the tool enhances productivity by applying automatic indentation, syntax highlighting, collapsible structures, and organized formatting to JSON responses loaded in the browser. This makes it easier to inspect nested objects, arrays, keys, and values without relying on external formatting tools or manual parsing methods.

Whether working with REST APIs, configuration files, debugging network responses, or testing web applications, the extension provides a streamlined workflow for reviewing structured data directly inside Mozilla Firefox. Its lightweight architecture ensures smooth performance while helping developers quickly identify errors, verify payload structures, and understand API outputs more efficiently.

Features:
• Automatically pretty-print JSON responses in the browser
• Clean and organized formatting for improved readability
• Syntax highlighting for keys, values, and data structures
• Easy inspection of nested objects and arrays
• Developer-friendly interface for API debugging workflows
• Faster analysis of REST API and JSON payload responses
• Lightweight extension with minimal browser resource usage
• Reduces reliance on external JSON formatting tools
• Helpful for frontend, backend, and QA testing environments
• Supports efficient debugging and data verification tasks
• Simple and responsive viewing experience in Mozilla Firefox
• Ideal for developers working with APIs and structured web data