Why should images of fonts be avoided in accessible documents?

Images of fonts should be avoided in accessible documents primarily because they cannot be read by screen readers. Screen readers rely on text-based information to convey content to users with visual impairments. When fonts are presented as images, the text is transformed into a visual format that lacks the underlying textual structure. This prevents assistive technologies from interpreting the content, meaning that users who depend on these technologies are unable to access the information contained in the text. Thus, to ensure inclusivity and accessibility, it is essential to use actual text rather than images of text in documents.

Other choices might refer to characteristics related to images, such as potential editing challenges or formatting issues, but these aspects do not directly influence the accessibility for users who rely on assistive technology. The emphasis on screen reader compatibility highlights why using text instead of images is critical for creating documents that everyone can use.