msxsl

msxsl simple.xml simple.xslt > output.html

simple.xml

<?xml version="1.0" encoding="UTF-8"?>
<a>Hello</a>

simple.xslt

<?xml version="1.0" ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

	<xsl:template match="a">
    <value><xsl:value-of select="."/></value>
	</xsl:template>
	
</xsl:stylesheet>

output.html

<?xml version="1.0" encoding="UTF-16"?><value>Hello</value>