Unique Title Rules

The page must contain exactly one title element.

The page must contain at least one h1 element.

The title element must contain text content

Implementation Notes

• Text content includes all text nodes of children of the title element.
• Leading and trailing spacing characters are ignored. NOTE: If the text content is only spaces it will be treated as empty.

The h1 element must contain text content.

Implementation Notes

• Text content includes all text nodes of children of the h1 element.
• Leading and trailing spacing characters are ignored. NOTE: If the text content is only spaces it will be treated as empty.
• If an img element with an alt attribute is contained in a h1 element, the alt attribute value is inserted into the heading text content in the order of appearance in the document to become part of the text content of the heading element.

The page should contain no more than two h1 elements.

The text content of the h1 element should match all or part of the text content of the title element.

Implementation Notes

• Spacing and punctuation in the text content of the h1 and title elements are ignored.
• Comparisons are case insensitive.
• If abbreviations are used in the title and/or h1 content, they will be replaced by their expansion defined in the abbr and acronym elements on the page before comparisons between the title and h1 are made.

The text content of an h1 element should not only come from the alt attribute of img elements.

Implementation Notes

• CSS should be used to style the text content of h1 elements, not images.

The last h1 element content for pages within the same domain should be unique.

The first 60 characters of title element content for pages within the same domain should be unique.