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Editorial Team
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Asked: 2026-06-10T05:46:43+00:00

<?xml version=1.0 encoding=utf-8 ?> <xsl:stylesheet version=1.0 xmlns:xsl=http://www.w3.org/1999/XSL/Transform> <xsl:template match=/> <!DOCTYPE HTML> <html> <head> </head>

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<?xml version="1.0" encoding="utf-8" ?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template match="/">
    <!DOCTYPE HTML>
    <html>
    <head>

    </head>
    <body>

    </body>
    </html>
</xsl:template>

</xsl:stylesheet>

It is getting a parse error in DOCTYPE. how to resolve this?

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1 Answer

  1. Editorial Team

    The W3C HTML 5 Reference recommends using doctype-system="about:legacy-compat":

    For compatibility with legacy producers of HTML — that is, software
    that outputs HTML documents — an alternative DOCTYPE is available for
    use by systems that are unable to output the DOCTYPE given above. This
    limitation occurs in software that expects a DOCTYPE to include either
    a PUBLIC or SYSTEM identifier, and is unable to omit them. The
    canonical form of this DOCTYPE is as follows:

    <!DOCTYPE html SYSTEM "about:legacy-compat">

    You can achieve this with any XSLT processor with the following:

    <xsl:output method="html" doctype-system="about:legacy-compat" />

    It will generate:

    <!DOCTYPE HTML SYSTEM "about:legacy-compat">
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