JSON Viewer

JSON Viewer is a web-based tool designed for developers, analysts, and data professionals who need to visualize and work with structured data formats. The platform transforms JSON, YAML, XML, CSV, TOML, TOON, and Mermaid files into interactive visual graphs, making it easier to interpret and manage complex data structures. Users can explore, edit, and compare JSON files graphically, with features that include a visual diff viewer for side-by-side comparison, direct editing from diagrams, and advanced diagram customization such as multi-node color highlighting.

The tool supports a broad range of visualization and editing capabilities, including AI-powered features to generate JSON from images or create dummy data, a structured JSON editor, and a Mermaid diagram editor for creating flowcharts and sequence diagrams. JSON Viewer also offers REST API testing integrated with diagrams, 3D graph visualization, and tools to repair or generate JSON. Users can download graphs and visualizations, and save or share documents using secure cloud storage. The Chrome extension allows instant visualization of JSON data directly from any webpage, and an Android app is available for mobile access. Integration with VS Code is also supported.

JSON Viewer is available with a free plan that allows uploading and processing small files, unlimited downloads, and access to essential visualization tools and extensions. The Pro plan, offered at a monthly or yearly subscription, adds advanced features such as ad-free usage, direct editing in diagrams, unlimited customization, support for large files, API access, AI-powered assistant, and personalized themes. The platform emphasizes data privacy, storing user data only when manually uploaded and ensuring it remains private.

With its multi-format support and user-friendly interface, JSON Viewer serves as a comprehensive solution for making structured data more accessible, visually intuitive, and easier to manage across various use cases, including API design, system design, CI/CD, network and infrastructure visualization, and JSON schema comparison.