JSON Hero is a web-based JSON explorer that lets you browse, search, and navigate JSON files through an interactive visual interface.
The tool solves the problem of making large or complex JSON structures readable and navigable. It infers the contents of strings to provide useful previews, generates an inferred JSON Schema for validation purposes, and offers multiple viewing modes including Column View (inspired by macOS Finder), Tree View, and Editor View. You can load JSON through drag-and-drop, paste, URL, Base64-encoded strings, or via integrations with VS Code and Raycast. The interface supports keyboard navigation, path-based sharing of specific locations within a JSON document, and search across both keys and values.
JSON Hero suits developers who frequently inspect, debug, or share JSON data and want a more intuitive alternative to raw text editors or browser developer tools. The Column View mode with its keyboard-driven navigation and ability to hold descendants while traversing the hierarchy distinguishes it from simpler JSON viewers. The tool is accessible through a web interface at no apparent cost, making it useful for quick inspections without installation, though the VS Code extension and Raycast integration provide tighter workflow integration for regular users.
The project maintains an open bounty program for contributions. Development activity shows engagement with the community through structured contribution incentives alongside traditional open-source collaboration.
