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Open-Source

JsonHero: A Powerful, Open-Source JSON Viewer You Can Host Yourself

Developers deal with JSON data all the time, and having a handy tool to visualize it makes life much easier. JsonHero is packed with features and offers three ways to explore your data: Column view (the most powerful), Tree view, and standard JSON view.

Developers deal with JSON data constantly, and having a solid tool to visualize it can really speed up your workflow. JsonHero is incredibly powerful and lets you look at your data in three different ways: Column view (the best one), Tree view, and Raw JSON.

If you’re working with sensitive data and need extra security, you can host it yourself—the official team provides instructions on how to set it up locally.

Github: https://github.com/triggerdotdev/jsonhero-web

Official Site: https://jsonhero.io

Column view is the best feature

Smart Content Preview

The tool can actually understand the content inside your JSON attributes—like images, dates, and colors—and display them properly.

Previewing an image URL

My personal favorite feature is being able to see specific fields across all items in an array at once to see how they relate.

Checking names for every element in an array—a lifesaver for troubleshooting

When you’re looking at a JSON file, it generates a specific URL. You can also click the “Share” button in the top right corner to copy a unique link to your data.

Every JSON gets its own unique URL

View JSON Directly via Base64

You can add a Base64-encoded string of your JSON right after https://jsonhero.io/new?j= (or your own URL if you’re self-hosting). For example: https://jsonhero.io/new?j=eyAiZm9vIjogImJhciIgfQ==. This is great if you want to integrate this viewer into your own internal dev tools.