Visualization

JSON Formatter

Json Formatter help to convert Json in a structure way so it is easy to read and understand. IJsonFormatter will help to format the json content. It provide some feature as follows:

Why use it?

  • Instantly makes ugly JSON readable
  • Handles 2-space, 3-space, or 4-space indentation
  • Works even if you paste a huge amount of code
  • You can copy the clean result with one click
  • It help to validate the JSON with error messages.
  • It will help to beautifier the json content.
  • You can download the formatted json content in a json file.
  • 98% applications use JSON for data exchange. So this tool is helpful to debug and validate json.

It works on Windows, Mac, Linux, and basically any browser like Chrome, Firefox, or Safari. You don't need to install anything. Just open the page, paste your code, and boom—it's formatted. It's a lifesaver for debugging or just trying to understand an API response.

Formatter Example:

// Before:
{"name":"John","age":30,"city":"New York"}

// After:
{
  "name": "John",
  "age": 30,
  "city": "New York"
}

JSON Validator

JSON Validator is an feature where you can check and identity syntax error based on Javascript Object Notation (JSON). JSON Validator help to debug the JSON when there is big JSON document and you are not sure where the error is.s

What it checks:

  • Finds missing commas and key quotes
  • Checks for unclosed brackets or braces
  • Shows you the exact line number of the error
  • Validates standard JSON syntax automatically
  • To Validate JSON, just need internet and no need to install software.
  • This tool will help to identify the syntax error in JSON and will point to specific line.

This is super useful for students learning JSON or developers who are tired of guessing where the error is. The error messages are simple and straight to the point, so you can fix it and move on.

Validator Example:

Error detected:
Expected ',' or '}' after property value in JSON at position 24

JSON Visualizer

This JSON Visualizer helps you understand your code by showing it in a Tree View or Graph View. You can think of it like a map that shows how your data is arranged. You can open and close different parts to see only what you need. It makes large and complex data easier to look at without getting confused.

Cool features:

  • Interactive Tree View (expand/collapse nodes)
  • Graph View for a visual mind-map style
  • Color-coded keys and values for easy reading
  • Great for understanding nested arrays and objects

This tool works on every browser like google chrome, microsoft edge and safari so it is quick and safe to use. You can use this on a laptop or on mobile without any problem. Following is live preview of JSON Visualizer like in a Tree View.

Visualizer Example (Tree View):

[]
insuranceCompanies
Array (1 item)
Aa
source
investopedia.com
Aa
time
Feb 2019

API Client & Multi-Tabs

We also added an API Client and tab support. This means you can get JSON directly from a URL, which is helpful for testing API endpoints without leaving the page. You can also open multiple tabs at the same time to work with different files, similar to how tabs work in a web browser.

Extra Tools:

  • Make GET, POST, PUT, DELETE requests
  • Send custom headers and request bodies
  • Manage multiple JSON files in separate tabs
  • Everything stays local and private

This is an all in one place for working with JSON. You don’t need to switch between tools like Postman and a text editor anymore. Everything can be done here. It sends requests directly from your browser, so testing public APIs becomes quick and easy.

API Client Example:

GET https://api.example.com/users
<-- 200 OK (150ms)

FAQ

What is JSON?

JSON means JavaScript Object Notation. It is a simple text format that computers can easily understand. Developers mostly use it to share data between websites and servers.

How do I use this tool?

Using this tool is very easy. Just paste your JSON code into the box on the left side. The tool will format it automatically. If you want to test an API, paste the URL at the top and click the Go button.

What does the Graph View do?

The Graph View shows your data in a visual way, kind of like a diagram. It helps a lot when your JSON has many nested parts and you want to see how everything is connected.

Is it free to use?

Yes, this tool is completely free. It was created to help students and developers who work with JSON files.

Do I need internet to use this?

After opening the page, you can format and validate JSON even without internet. However, if you want to fetch JSON from a URL, an internet connection is required.

Is my data safe?

Yes, your data is safe. None of your JSON is saved anywhere. Everything is processed directly in your browser, so your data stays on your device.

Which browsers work with this?

This tool works well on most modern browsers such as Chrome, Firefox, Safari, and Edge.