JSON Viewer

Online JSON Viewer & Visualizer

Online JSON Viewer lets you edit, format, analyze, and visualize JSON data in seconds. It’s designed to be fast, clean, and beginner-friendly—perfect for developers, testers, and data analysts who work with JSON every day.

This tool also works as a JSON file viewer. You can upload a JSON file, paste a JSON URL, or enter raw JSON to instantly view it in a clear, tree-structured format that’s easy to explore and understand.

As a powerful JSON visualizer, it helps you search, inspect, and navigate each JSON object without confusion. The collapsible tree view lets you expand and collapse nodes, making large, complex JSON files easier to manage.

With the built-in JSON navigator, you can move smoothly through deeply nested data structures and find exactly what you need—without scrolling endlessly.

Sometimes users search for “jason viewer”, but it means the same thing: a JSON Viewer

What Is JSON?

JSON (JavaScript Object Notation) is a lightweight, text-based format for storing and sharing data between apps, websites, and servers. It’s easy for humans to read and write, and easy for computers to generate and understand—so it’s widely used for data exchange across almost every modern programming language.

You’ll often see JSON in web and API communication, especially when a browser talks to a server in the background (like in AJAX requests). Compared to XML, JSON is usually smaller, cleaner, and faster to work with. When JSON is sent over the web, it commonly uses the application/json Content-Type, which helps systems immediately recognize the data format.

Learn More About JSON

• How to Create a JSON File
• JSON Full Form
• What Is JSON?
• JSON Examples with All Data Types (Including Arrays)
• Pretty Print JSON in Python
• Read JSON Files Using Python
• Validate JSON Using PHP
• Load JSON from a File in Python

Works Everywhere

This secure and reliable JSON Viewer works smoothly on Windows, macOS, and Linux, and supports all major browsers, including Chrome, Firefox, Safari, and Microsoft Edge.

Fast, accurate, and easy to use—this is the best online JSON viewer for editing, formatting, and understanding JSON data with confidence.