Complex documents may be difficult to make fully accessible. In that case, you do have the option of creating a text file to post in addition to the PDF. By posting a text file, you are providing a way for those who use screen readers to access the information.
Open the PDF in Adobe Acrobat Professional. Select:
Review the text file for errors. Save the corrected file as a .txt file. Post both the PDF and the text file to the website to provide site visitors with a choice.