How to Convert XML to JSON Online: A Complete Guide to XML Parsing, JSON Output, and Practical Applications

If you work with APIs, config files, or data pipelines, you've probably run into a situation where data shows up as XML but your app needs JSON. Rewriting the structure by hand is slow and you will mess something up, especially once you're dealing with nested elements, attributes, and mixed content. An online converter lets you skip all that. Paste your XML, get clean JSON back, move on.

This guide covers how XML-to-JSON conversion works, how to use the converter on wtools.com, and the edge cases worth knowing about before you rely on the output.

What is XML to JSON conversion?

XML (Extensible Markup Language) and JSON (JavaScript Object Notation) both carry structured data, but they look nothing alike. XML is a tree of nested tags that can have attributes. JSON is key-value pairs, arrays, and basic data types.

Converting XML to JSON means taking that tag-based hierarchy and turning it into objects. Element names become keys, text content becomes values, and you need rules for what happens to attributes, nested children, and repeated elements.

Why you'd want to do this

JSON is what most web APIs, front-end apps, and NoSQL databases expect. If you're pulling data from a legacy system, a SOAP API, or an XML feed like RSS or a sitemap, converting to JSON is usually the first thing you have to do before you can actually work with it.

How XML maps to JSON

Knowing the mapping rules helps you predict what the output will look like:

• Elements become JSON keys. The tag name is the key, and the text inside becomes a string value.
• Nested elements become nested JSON objects.
• Repeated elements (siblings with the same tag name) become JSON arrays.
• Attributes are usually kept using a naming convention like a @ prefix or a separate _attributes key.
• Mixed content (text mixed in with child elements) needs special handling and often ends up under a #text key.

For example, this XML:

<student>
  <name>Ada</name>
  <score>9</score>
</student>

Converts to:

{
  "student": {
    "name": "Ada",
    "score": "9"
  }
}

This is the same example you'll find on the tool page at wtools.com.

How to convert XML to JSON on wtools.com

Here's the process, start to finish.

Step 1: Open the tool

Go to wtools.com/convert-xml-to-json. The page loads with an input area and output area side by side.

Step 2: Enter your XML

Paste your XML into the input field. It handles everything from small snippets to larger documents. Just make sure your XML is well formed. Unclosed tags or broken syntax will give you errors or garbage output.

Step 3: Configure indentation

Set how you want the JSON formatted. Compact output (no whitespace) is good for production. Indented output (2 or 4 spaces) is easier to read when you're developing or debugging.

Step 4: Convert and copy

Hit the convert button. The JSON shows up right away. Look it over, then copy it for whatever you need: your app, an API request, a config file.

Realistic examples

Simple element conversion

Input XML:

<config>
  <host>localhost</host>
  <port>8080</port>
  <debug>true</debug>
</config>

Output JSON:

{
  "config": {
    "host": "localhost",
    "port": "8080",
    "debug": "true"
  }
}

Notice that all values come through as strings. If your app needs 8080 as a number or true as a boolean, you'll have to cast those yourself after conversion.

Nested elements with repeated children

Input XML:

<library>
  <book>
    <title>Clean Code</title>
    <author>Robert C. Martin</author>
  </book>
  <book>
    <title>Refactoring</title>
    <author>Martin Fowler</author>
  </book>
</library>

Output JSON:

{
  "library": {
    "book": [
      {
        "title": "Clean Code",
        "author": "Robert C. Martin"
      },
      {
        "title": "Refactoring",
        "author": "Martin Fowler"
      }
    ]
  }
}

The repeated <book> elements get grouped into a JSON array automatically, which is what most apps expect.

Why use an online tool for this

• No installation required. It runs in your browser. Nothing to download or set up.
• Indentation control. Switch between compact and pretty-printed output depending on whether you're optimizing for readability or file size.
• Instant feedback. Paste and convert in one step. Much faster than writing a script or installing a CLI tool when you just need a quick conversion.
• Privacy-friendly. The wtools.com tool page states that processing happens in the browser, so your data doesn't get uploaded anywhere.
• Works on any device. Desktop or mobile, any modern browser will do.

Practical use cases

Migrating legacy API responses

A lot of enterprise systems still return XML from SOAP endpoints. If you're building a modern front end or microservice that needs to consume those responses, converting XML to JSON is an unavoidable step. Using wtools.com for quick spot checks or prototyping saves time before you commit to writing automated conversion logic.

Processing RSS and Atom feeds

RSS feeds are XML. If you're building a feed reader or pulling content into a JSON-based CMS, converting feed entries to JSON gives you something that JavaScript frameworks and NoSQL databases can work with directly.

Configuration file conversion

Some tools use XML config (like Maven's pom.xml or older .config files) while your deployment pipeline might expect JSON. Converting between formats keeps things consistent across your toolchain.

Data analysis and scripting

When you get a dataset in XML, say from a government open data portal, converting it to JSON makes it much easier to load into Python (via json.load), JavaScript, or tools like pandas.

Edge cases to keep in mind

• Attributes vs. elements. XML attributes don't have a direct JSON equivalent. The converter maps them using a convention, so check the output to make sure attribute data ends up where you expect.
• Single vs. repeated elements. If an element only appears once, it may come through as a plain object rather than an array. If your schema expects an array, you might need to wrap it yourself.
• Namespaces. XML namespaces (e.g., xmlns:ns) add prefixes to element names. Those prefixes will show up in the JSON keys, and you may need to strip them afterward.
• Empty elements. A self-closing tag like <active/> might convert to null or an empty string, depending on the parser.
• Data types. XML treats everything as text, so all values in the JSON output are strings. If you need numbers or booleans, you'll have to cast them in your own code.

FAQ

How do I convert XML to JSON online?

Paste your XML into the input field at wtools.com/convert-xml-to-json, pick your indentation preference, and hit convert. The JSON output shows up instantly and you can copy it to your clipboard.

Does the converter handle XML attributes?

Yes. Attributes get mapped to JSON keys using a naming convention (usually a @ prefix). Check the output to confirm the attribute values ended up where your app expects them.

Are values converted to their correct data types?

No. XML treats all content as text, so the JSON output will have string values. You'll need to parse numbers, booleans, and nulls in your own code after conversion.

Is my XML data stored or sent to a server?

The wtools.com tool page says processing happens in the browser. Your input isn't stored or logged on a remote server.

Can I convert large XML files with this tool?

It handles reasonably large documents in the browser without issues. For very large files (multiple megabytes), performance will depend on your device and browser. At that point, a local CLI tool or a script is probably a better fit.

What is the difference between compact and indented JSON output?

Compact output strips all unnecessary whitespace and gives you the smallest possible string, good for API payloads and storage. Indented output adds line breaks and spaces so you can actually read it, which is what you want when debugging or reviewing code.

Conclusion

Converting XML to JSON is one of those tasks that comes up constantly in modern development. Whether you're wiring up a legacy SOAP service, parsing an RSS feed, or migrating config files, an online converter saves you from doing it by hand and catching mistakes after the fact. The XML to JSON tool on wtools.com gives you instant, in-browser conversion with indentation options, no setup needed and no data leaving your machine. Worth bookmarking for the next time XML shows up and JSON is what you actually need.