The first step in creating an accessible PDF from Microsoft Word is to ensure that the original Word document is accessible. For steps, see Creating Accessible Documents in Microsoft Word.
Starting with an accessible Word document, a goal when exporting to PDF is do so in a way that preserves the accessibility features of the Word document, including heading structure, alternate text for images, and markup that explicitly identifies lists, tables, document language, and other content that is important for accessibility.
Do not print to PDF. This method of creating a PDF does not preserve the document’s accessibility features. The correct method of exporting to PDF depends on which version of Microsoft Office you’re using.
Word can now generate a tagged PDF that preserves a document’s accessibility features. To use this feature: