When you save a Word file as PDF, there are a few steps you can take to ensure that your PDF file retains the accessibility features you included in your Word document (headings, ALT text for graphics, etc.).

Check for Accessibility Issues

When working in Word, you can check for accessibility issues before saving your document to PDF. Of course, an automated checker will not catch every issue, so you should also do some manual checking when possible. For example, it will be able to tell if you included ALT text for a graphic, but it cannot tell you if the ALT text is meaningful unless you inspect the text.

Resources for creating accessible PDF files