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When framed in a protocol that can convey a title otherwise, such as email with its Subject header, <title> is optional. So the shortest valid HTML is just <!DO
by chrismorgan 3y ago
When framed in a protocol that can convey a title otherwise, such as email with its Subject header, <title> is optional. So the shortest valid HTML is just <!DOCTYPE html> and no more—it’s just only valid in certain contexts.