W3C DOCTYPE Declarations

The table below shows a list of valid DTDs you can use in your documents for validation against the relevant W3C standard. The left column provides a link to the standard itself, as well as links to the applicable DTDs.

HTML 2.0

html.dtd

<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN">

HTML 3.2

html32.dtd

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">

HTML 4.01

strict.dtd
loose.dtd
frameset.dtd

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
  "http://www.w3.org/TR/html4/strict.dtd">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  "http://www.w3.org/TR/html4/loose.dtd">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN"
  "http://www.w3.org/TR/html4/frameset.dtd">

XHTML 1.0

xhtml1-strict.dtd
xhtml1-transitional.dtd
shtml1-frameset.dtd

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

XHTML 1.1

xhtml11.dtd

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" 
  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

MathML 1.01

math1.dtd

<!DOCTYPE math SYSTEM 
  "http://www.w3.org/Math/DTD/mathml1/mathml.dtd">

MathML 2.0

mathm12.dtd

<!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN"	
  "http://www.w3.org/TR/MathML2/dtd/mathml2.dtd">

XHTML + MathML + SVG

xhtml-math-svg.dtd

<!DOCTYPE html PUBLIC
  "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
  "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">

SVG 1.0

svg10.dtd

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">

SVG 1.1 Full

svg11.dtd

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

SVG 1.1 Basic

svg11-basic.dtd

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd">

SVG 1.1 Tiny

svg11-tiny.dtd

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">

XHTML + MathML + SVG Profile (XHTML as the host language)

xhtml-math-svg.dtd

<!DOCTYPE html PUBLIC
  "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
  "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">

XHTML + MathML + SVG Profile (Using SVG as the host)

xhtml-math-svg.dtd

<!DOCTYPE svg:svg PUBLIC
  "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
  "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">

Example Template

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" 
  xml:lang="en" lang="en">

<head>
  <title>An XHTML 1.0 Strict standard template</title>
  <meta http-equiv="content-type" 
    content="text/html;charset=utf-8" />
  <meta http-equiv="Content-Style-Type" content="text/css" />
</head>

<body>

  <p>... Your HTML content here ...</p>

</body>
</html>