The Accessibility File Scan block in Moodle was developed to help determine how friendly course PDFs are to assistive technology such as Read & Write, Kurzweil, screen readers, and various other tools students might use to help them consume course readings.
The Moodle File Scan tool checks the accessibility of PDF files in a Moodle class and provides a report on the accessibility of each file. The status is either pass, fail, check, or question. A PDF file fails if it does not contain any text. A file is marked as "check" if the file has text but does not have other accessibility elements. A PDF passes if it meets all the accessibility checks.
...