JSON Viewer Online

Working with JSON data can turn messy, especially when it is unformatted, deeply nested, or has to be converted into another format like XML or CSV. Our Free JSON Viewer Tool is your all-in-one good-on-the-cruise solution to editing, validating, beautifying, minifying, converting, and downloading JSON immediately.

What Is and Why Do I Need a JSON Viewer?

JSON is a data format to store and/or exchange data between web applications and servers. Whether you’re a web developer, data analyst, API tester, or simply operating in the field of boggling some huge dataset, neat and readable JSON is a must.

Not-white JSON brings down all API calls, gives errors in your app, or worse, makes debugging almost impossible! That is why a bulkio, fast, and super easy-to-handle JSON viewer/editor is needed- U-no-watt: our tool is that.

What Does This JSON Viewer Offer?

This tool lets you easily work with JSON data from start to finish. It allows you to:

Because all operations are done locally in your browser, your data remains secure and private.

Features Breakdown

Beautify JSON

Sometimes pasting raw JSON into the tool can be unpleasant to read, especially when entered in a single line or with zero indentation without line breaks. The whole point of Beautify is that when you click it, your JSON immediately gets proper line breaks and spacing just about everywhere. This is very helpful when navigating through it, especially while debugging and developing.

Minify JSON

If you want to minimize the JSON size, either for production or for better load times, you can use Minify to strip it down to one line by removing all whitespace, line breaks, and indentations that are not strictly necessary. This is typically so you can use it in your code or application where performance is critical.

Validate JSON

You found one: JSON errors. Missing commas, keys not quoted, unmatched brackets–those will definitely destroy your application’s functionality or cause an API to fail. Click Validate button to scan syntax of JSON. When a problem arises, it will highlight the line, and it will also provide you with an error message so you can sort it out on your own.

Convert JSON to XML

There still are some legacy systems out there that may require XML data format. So, if you ever have to deal with such a system, this must-have tool lets you convert JSON to well-structured XML with the flick of a button. It automatically handles nested structures and outputs clean XML.

Convert JSON to CSV

CSV is the most celebrated file format for spreadsheets, databases, and data analysis tools. Flattening your JSON structure for conversion into a CSV file that can be opened with Excel or Google Sheets is what this tool is designed for. Data exports and reports, indeed!

Upload File or Load URL

You’re not limited to copy-pasting JSON. You can upload a .json file from your computer or fetch one directly from a URL. Simply click Upload to load local files or paste a URL and click Load URL to fetch remote JSON.

Download in Multiple Formats

Once you’re done editing, validating, or converting your JSON, you can download it in your preferred format:

• data.json
• data.xml
• data.csv

No need for extra tools or extensions. Everything is built in.

How to Use the JSON Viewer Tool

Here’s a quick step-by-step guide:

1. Paste or upload JSON in the left-hand panel.
2. Click Beautify to make it readable or Minify to compress it.
3. Use Validate to check for syntax issues.
4. Click on To XML / To CSV to convert the format.
5. Review the output in the right-hand panel.
6. Use Download button to save results.

You can also edit the formatted JSON manually and use the tool to re-beautify or validate changes.

Use Cases

• API Testing – Quickly analyze responses from REST APIs
• Web Development – Format JSON config or data files easily.
• Data Analysis – Convert JSON to CSV for spreadsheet use
• Education – Help students learn JSON structures visually
• Documentation – Create clear and readable JSON samples for manuals
• QA/Debugging – Validate JSON payloads before submission

Examples

Original (Raw JSON):

{"id":1,"name":"Alice","email":"alice@example.com","roles":["admin","editor"]}

Beautified Output:

{
  "id": 1,
  "name": "Alice",
  "email": "alice@example.com",
  "roles": [
    "admin",
    "editor"
  ]
}

CSV Output:

id,name,email,roles
1,Alice,alice@example.com,"admin;editor"

FAQs