What is XML? XML, short name for Extensible Markup Language, is used as the file extension for Extensible Markup Language (XML) files. .XML files are text files that can be opened by Notepad or any text editors. See the sample .XML file included below.

File Extension: .XML

MIME Type: text/xml, application/xml

File Content: Extensible Markup Language document

.XML files are Extensible Markup Language files, which are structured documents written in Extensible Markup Language (XML). Here is a sample .XML Extensible Markup Language file containing some simple XML elements:

<?xml version="1.0"?>
<root>
   <quiz>
      <questoin>+1-2*3/4=?</questoin>
      <answer>-0.5</answer>
   </quiz>
</root>

.XML Extensible Markup Language file sample:: Click sample.xml to download.

Since .XML text files are in text format, you can use Notepad or any text editor to create or modify them. No special software is needed.

For for information on how to use .XML Extensible Markup Language files, see links below:

• Extensible Markup Language (XML), by W3C.