Extensible Stylesheet Language Transformations

XSLT or XSL Transformations is a W3C organization standard that presents a way to transform XML documents into other and even non-XML formats.

XSLT style sheets - although the term style sheets does not apply to the direct function of XSLT - perform document transformation using one or more template rules. These template rules attached to the source document to be transformed feed an XSLT processor, which performs the desired transformations by putting the result in an output file, or, as in the case of a web page, the directly on a display device such as the user's monitor.

Currently, XSLT is widely used in web publishing, generating HTML or XHTML pages. The union of XML and XSLT allows to separate content and presentation, thus increasing productivity.