JSONMASTER

JSONMASTER is a comprehensive suite of web-based tools for developers who work with structured data. It provides a central hub for formatting, validating, visualizing, and monitoring data in formats like JSON, CSV, XML, YAML, and TOML. You can paste in messy code to have it cleaned and repaired, or feed it a complex object to generate an interactive diagram. The tool also includes an API monitor to watch endpoints for health and schema changes.

The platform stands out by bundling several essential utilities into one clean interface. The visualizer is a key feature, letting you switch between graph, flowchart, tree, and table views to understand data relationships. For daily workflow, there's a Chrome extension that adds a right-click option to format and visualize data found on any webpage. The site is built and maintained by a solo developer focused on creating fast, intuitive tools.

This toolkit is most useful for software developers, data engineers, and anyone who regularly inspects API responses or configuration files. It simplifies tasks like debugging a nested JSON payload from a backend service, preparing sample data for testing, or ensuring configuration files are syntactically correct before deployment. It's a practical, no-fuss set of utilities for common data-handling chores.