Free online JSON viewer tool for developers

JSON Visualizer Online & JSON to TypeScript Converter

Visualize JSON as an interactive graph, inspect nested data, and convert JSON to TS interfaces instantly in one focused workspace.

Open JSON Visualizer JSON to TypeScript

Two JSON tools in one workspace

Use JSON Visually as a JSON visualizer online, a JSON viewer tool, and a fast converter when you need TypeScript interfaces from real data.

JSON Flow Viewer

Turn nested JSON into an interactive graph so API responses, config files, and complex objects are easier to scan and debug.

Open Flow Viewer

JSON to TypeScript

Generate clean TypeScript interfaces from JSON and keep your frontend models aligned with real API data.

Convert JSON to TS

Preview JSON before it becomes code

Paste a real payload, inspect the structure visually, then convert JSON to TypeScript when you are ready to model it in your app.

{
  "user": {
    "name": "John",
    "age": 25,
    "roles": ["admin", "editor"]
  }
}

TypeScript output preview

Add your converter screenshot here.

How to use the JSON visualizer

Step 1

Paste your JSON into the editor

Step 2

Visualize JSON as a graph or generate TypeScript

Step 3

Copy clean output for debugging, API work, or frontend models

JSON visualizer FAQ

What is JSON?

JSON, or JavaScript Object Notation, is a lightweight data format used to store and exchange structured information between apps, APIs, and files.

What is a JSON visualizer?

A JSON visualizer is an online tool that turns JSON data into a readable structure, such as a graph or tree, so nested fields are easier to understand.

How do I convert JSON to TypeScript?

Paste JSON into the converter, choose TypeScript, and the tool generates interfaces from the detected fields and value types.

Is this JSON viewer tool useful for API responses?

Yes. It is designed for API responses, nested payloads, frontend debugging, and quickly understanding unfamiliar JSON structures.

Created by Abduraxmon T