Avoid using PDFs on your website: they are not the best choice for accessibility

PDF files are created to be printed, not for online use. And if they have not been properly optimized, they can create significant barriers, especially for those accessing from smartphones and tablets, thus with small screens, for those with visual impairments, or those using assistive technologies, such as screen readers.

What are the problems?

• The text is not fluid, it does not fit within the margins. So if the user accesses from a smartphone, or the user needs to enlarge the text to read, they will have to scroll the document horizontally as well as vertically;

• The reading order of the various sections of the document does not always reflect the graphic appearance of the document, it can be incorrect, and thus create confusion for those using screen readers;

• PDF forms are difficult or impossible to fill out using only the keyboard;

What alternatives should be preferred? 

• Converting the content into accessible web pages, or into editable digital documents (Word and Google Docs) is the best solution for accessibility: it allows users to interact via browser or assistive technology and customize the reading experience.
• Alternatively, you can offer the PDF only as an additional "printable" option, but providing a readable and accessible PDF, equivalent in content and structure.

Making a PDF accessible is complex and expensive. Often it is simpler (and more inclusive) to rethink the format!

Accessibility is not just a legal obligation, but a good practice that improves everyone's experience.

See the Princeton University Guide