JSON Hero: A Simple and Powerful JSON Viewer Tool

JSON Hero is a simple yet practical JSON tool that provides a clean UI and extra features to make reading and understanding JSON documents easier and more intuitive.

It supports several views for inspecting JSON, including column view (inspired by macOS Finder), tree view, and raw JSON view, allowing users to choose the most suitable representation.

The tool can automatically infer the content of strings and offers useful previews and properties for selected values, such as date and time, image URLs, website URLs, and JSON URLs.

Installation is straightforward: clone the repository and install dependencies with the following commands:

git clone https://github.com/jsonhero-io/jsonhero-web.git
cd jsonhero-web
npm install

After installation, start the application with:

npm start

Once running, open http://localhost:8787 in a browser. Users can drag and drop JSON files onto the site, paste JSON text or a JSON URL into the provided form, and instantly view the data.

Key features include content preview (e.g., automatic rendering of dates, images, and links), a searchable interface, and the ability to generate shareable links after editing or reviewing data, which is convenient for front‑end developers.

Overall, JSON Hero supports multiple viewing modes, integrates with VS Code extensions, and is a valuable tool for anyone who frequently works with JSON data.