Format XML Online

Quickly and easily reformat XML data strings into a human-readable format and validate for XML errors. Save, share, and collaborate on your XML online. Detect and fix XML errors with built-in syntax highlighter and best-in-class XML linter. Explore XML with a hand-picked database of XML code examples. The Online XML Formatter and Validator does not require browser plug-ins or desktop software. It's free.

About Online XML Formatter & Validator

ReqBin Online XML Formatter & Validator converts poorly formatted or minified XML data strings into a human-readable format and validates the XML for errors with a best-in-class XML linter. Online XML Formatter & Validator does all the formatting in the browser and does not send requests to the server, keeping your data safe and secure.

To format an XML, copy & paste the XML data string into the XML Formatter window and click on the Format button. If the online XML validator finds an error in your XML, it will flag the line with the error in the XML editor and display a detailed description of the error right in the editor.

  • Convert poorly formatted or minified XML to well-formatted human-readable XML
  • Validate XML for errors with best-in-class XML linter
  • Save XML in the cloud and access it anywhere and on any device
  • Share and collaborate your XML data snippets online
  • Works fully in the browser and keeps your data safe and secure
  • Upload XML files into Online XML Formatter & Validator from your disk
  • XML syntax highlighting
  • Sample XML data for a quick start
  • Light and Dark XML Editor themes
  • Clean UI and is very easy to use
  • It's free

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.