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.).
Textual alternatives to images should be provided for learners with visual and certain cognitive disabilities employing screen readers. This also enables images to be understood in the event that they are not displayed in the browser.
Tables should be used to display data. Avoid using tables for page layout, though it might be tempting to do so. Layout tables do not allow users flexibility in viewing the content since it is “trapped” in the table cell and might not be read in the correct order by a screen reader.