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This section checks that:

• Document has a descriptive title
• Document language is set (English is usually set by default)

This section checks that visual content can be used and understood by all, including people using screen readers. It checks that:

• Alt text is included for images and drawings
• Image size is within file size limits

When used correctly, headings can communicate useful document structure information. This section checks that:

• Headings are used
• H1 is used only once*
• Headings are correctly nested in a hierarchy

*H1 can be used more than once in a lengthy document, such as a report or textbook. However, headings must be used in order. For example, H2 cannot come before H1.

If your slide has tables, this section makes sure they are correctly tagged and described. This section checks that:

• Tables are tagged correctly with headers
• Cells are not merged
• Cells are not empty

This section provides guidance on lists, page headers and footers, and bookmarks. It checks that:

• Page headers and footers are used
• Headers and footers are not required, but can help with usability when used for metadata like document title and page numbers
• Lists are correctly marked as numbered or unnumbered lists

This section checks for a variety of formatting issues. It checks that:

• Unsupported contents are not used, including incompatible fonts or design elements
• Good contrast is used
• Font size is large enough to be readable
• All CAPS is not used
• Center alignment is not used for paragraphs
• Very long paragraphs are flagged
• Link text is meaningful