In creating accessible PDFs, what should be avoided?

Using scanned images as text elements should be avoided when creating accessible PDFs because such images do not convey textual information in a way that assistive technologies can interpret. Scanned images typically consist of pixels rather than text, which means screen readers and other accessibility tools cannot read the content as text. This poses significant barriers for individuals who rely on these technologies to access information.

In contrast, structuring content with headings and lists enhances the document's readability and navigability, making it easier for users to understand the hierarchy and organization of the content. Including alternative text for images ensures that users who cannot see the images still receive essential information regarding their content. Providing navigational bookmarks also improves accessibility by allowing users to jump to different sections or pages more easily, facilitating a better user experience. Hence, the focus on avoiding scanned images aligns with the goal of maximizing accessibility for all users.