All online pages should have unique topics that describe the content of the page or document. Not only do unique titles allow screen readers to distinguish individual pages, but they also enhance search results.
WCAG 2.0 Guideline 1.4.2 — "Web pages have titles that describe topic or purpose."
Depending on the type of document, this can be accomplished in a number of ways.
Web pages should include a TITLE tag within the HEAD area, and the title should be unique to each page on the Web site. The TITLE can be repeated as the H1 of the page. See examples below.
Accessible Web Title
<title>Charts and Accessibility | AccessAbility Site</title>
<h1>Charts and Accessibility</h1>
A less accessible method would be to repeat the site title alone on each page. If each page on the site has the same title, screen readers would not be able to easily distinguish different pages.
Less Accessible Web Title
A Web site with FRAMEs or iFRAMES should be sure that each frame is given a meaningful title via the
Individual slides in PowerPoint each should each have a title so that screen readers can navigate to individual slides.
Word files should also include a title styled as Heading 1 at the beginning of the document.