Standard Doctypes
Below are a list of various doctypes one may use in a web page. They are organized from most recommended to least recommended
- HTML 4.01 Strict (recommended)
- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
- XHTML 1.0 Strict (Recommended)
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- HTML 4.01 Frames Page
- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
- XHTML 1.0 Frames Page
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
- XHTML 1.0 Transitional
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
- HTML 4.01 Transitional
- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
- HTML 3.2
- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
- HTML 2.0
- <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">