Doctypes and their respective layout mode
Last updated: April 1, 2003
This table ignores the 'almost standard' mode of newer Mozilla versions.
Doctype IEX5 / Mac IEX6 OP7.02 NN 6.0 Moz 0.9.5 Moz 1.2a No !DOCTYPE present, no Version present, and HTML 2.0, 3.0, 3.2: quirk quirk quirk quirk quirk quirk <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> quirk quirk quirk quirk quirk quirk Any unrecognized Doctype, e.g. <!DOCTYPE BHTML PUBLIC "-//BC//DTD BHTML 3.2 Final//EN"> standard standard standard standard standard HTML 4.0
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd">standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd">standard standard standard quirk quirk quirk <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> quirk quirk quirk quirk quirk quirk <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN"
"http://www.w3.org/TR/REC-html40/frameset.dtd">standard standard standard quirk quirk quirk <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN"> quirk quirk quirk quirk quirk quirk HTML 4.01 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict //EN"> standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict //EN"
"http://www.w3.org/TR/html4/strict.dtd">standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> quirk quirk quirk quirk quirk quirk <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">standard standard standard standard standard standard <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN"> quirk quirk quirk quirk quirk quirk <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN"
"http://www.w3.org/TR/html4/frameset.dtd">standard standard standard standard standard standard XHTML Proposed Recommendation 1999 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/1999/PR-xhtml1-19991210/DTD/xhtml1-strict.dtd">standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/1999/PR-xhtml1-19991210/DTD/xhtml1-transitional.dtd"> standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/1999/PR-xhtml1-19991210/DTD/xhtml1-frameset.dtd"> standard standard standard standard standard standard XHTML 1.0 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"> standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> standard standard standard standard standard standard <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "DTD/xhtml1-frameset.dtd"> standard standard standard standard standard standard XHTML Basic <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"
"http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd">standard standard standard standard standard standard