Online XML Formatter & Validator

Quickly and easily convert XML data strings to an easy-to-read format and validate for XML errors. The Online XML Formatter and Validator includes a best-in-class XML code editor with advanced XML syntax highlighting, a XML lint error checker, and a XML code reformatter


XML Formatter Features

Convert complex and minified XML data strings to a human-readable format and detect JSON errors with the free ReqBin XML formatting and linting tool. View both the source XML code and the result of formatting in a convenient two-pane view.

  • XML syntax highlighting
  • XML linting and validation
  • Support for Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge browsers
  • Clean UI and easy to use
  • Two-pane view
  • It's free

About Online XML Formatter

With ReqBin Online XML Formatter and Validator, you can format and validate XML strings in your browser. The XML formatter does not send requests to the server, making XML formatting safe and fast. To format XML, paste the XML string into the XML Formatter source field and click the Format XML button. The right pane will show the formatted XML. Whenever the online XML validator encounters an error line in your XML, it will flag the error and display a detailed description.

What is XML?

XML (eXtensible Markup Language) is an open data format for structuring, storing, and transmitting data over a network using a human-readable text format. XML language markup is similar to HTML. XML is independent of any programming language, software, or hardware, and can be easily parsed into syntactic constructs by XML processors. XML data format is widely used to store and transfer data objects over the network, during client-server interactions in enterprise applications. The XML format is informative and easy to understand. The MIME type for XML files is application/xml. XML files use the *.xml extension.

Why format and validate XML?

To save bandwidth, many applications minify XML files before transferring XML data over the network. This does not affect the data in the XML file, but it makes the code unreadable to humans. XML minification can sometimes lead to invalid XML, which can corrupt the data being transferred and interfere with applications that use the XML. XML data errors can be difficult and time-consuming to locate. You can troubleshoot XML errors by using an online tool that formats XML and indicates errors, such as ReqBin Online XML Formatter and Validator.

How to format XML Online?

You can format your XML string online by entering it in the Source XML field and clicking the Format XML button. The formatted XML appears in the Formatted XML box. If your XML contains errors, the online XML formatter will highlight the error line and provide a detailed description of the error on the left panel (Source XML box).

Why format XML online?

The ReqBin Online XML Formatter and Validator runs smoothly and without errors. Online XML Formatter does not require any software installed on your computer or a browser plug-in and works directly in your browser. XML Formatter is a fast and secure online application that can save you time troubleshooting hard-to-find XML issues.

How does the XML formatter and validator work?

The Online XML formatter and validator runs seamlessly on your browser without transferring the XML to the server. XML Validator uses best-in-class JavaScript libraries to format and validate XML data strings right in your browser. ReqBin XML Formatter validates your XML content against XML standards, informing you of any errors that may occur. With ReqBin Formatter, you can quickly identify any errors that may have happened in your XML, saving you time and allowing you to focus on your work.

Online XML Formatter Example

Below is an example of the original XML and the formatted result.

Original XML Example
<Order><Id>78912</Id><Customer>Jason Sweet</Customer><Quantity>1</Quantity><Price>18.00</Price></Order>

And an example of how the online XML formatter works.

Formatted XML Result
   <Customer>Jason Sweet</Customer>

XML Syntax Rules

  • Any XML document should contain one root element.
  • Every XML element must have a closing tag.
  • XML has no predefined tags.
  • XML elements must be properly nested.
  • Tags in XML are case-sensitive.
  • XML attributes must be quoted.
  • The < > & ' and " characters must be escaped.
  • XML strings can contain comments.
  • The MIME type for XML files is application/xml.

Online JSON Formatter and Validator

If you need to format JSON data strings, you can use our JSON Formatter, which provides the same feature set as XML Formatter but for JSON strings.

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