An important way to make PDF files accessible is to ensure that the document is 'tagged.'

A 'tagged PDF' includes the structure of the document, somewhat like an internal table of contents with additional information. PDF tags allow for the identification of content such as headings, lists, tables, etc., and the inclusion of alternative text for images. Without tags, it is impossible to use accessibility software like text-to-speech or screen readers.

Unfortunately, not all PDF files are tagged. Therefore, it's important to tag your document before uploading it to Canvas, for example, in Adobe Acrobat.

Ensure that your documents and presentations remain accessible when converting them to PDF format.

While the best method to ensure a document is accessible is to leave it in its original format, many instructors prefer to export documents and presentations in PDF format. When exporting in PDF format, it's essential to check the export settings to ensure that the PDF file is tagged, making it easier to navigate.

PDF files that are not tagged result in poor accessibility.