Ally is an accessibility tool providing analysis / remedy of accessibility issues for files hosted within moodle
How to run an accessibility check in Adobe Acrobat Pro and quickly fix some common issues.
Convert scanned documents and image files into searchable and editable PDF documents using Adobe Acrobat Pro.
How to properly tag content types and set alternate text for figures/images in Adobe Acrobat Pro
Correcting insufficient color-contrast of text using Adobe Acrobat Pro