DevJSON is a versatile Chrome add-on designed for developers who regularly work with JSON data. It offers a range of features including a JSON formatter and validator that presents a clean, collapsible tree view of pasted JSON, allowing users to easily identify syntax errors with detailed feedback. Users can view live statistics such as line count and file size, and they have the option to copy or download the formatted output directly from the interface. Additionally, the format converter supports seamless conversion between JSON, YAML, CSV, and TOML, with automatic format detection and file download capabilities.

The tool also includes a powerful JSONPath query engine that allows users to run expressions and see results in real-time, complete with a built-in cheat sheet for easy reference. A standout feature is the AI-powered analysis, which integrates with various AI models to help explain JSON structures, infer schemas, and perform data transformations using natural language prompts. Privacy is prioritized, with no data collection, ensuring all processing occurs locally within the browser.