Every non-text element requires a text alternative. This article provides instructions for adding alternative text to all images that convey meaning in instructional materials including Canvas sites, word processing documents, spreadsheets, and slide presentations.
Microsoft Word and PowerPoint
To add Alt Text for an image element in Word for Windows (and Mac):
Rich Text Editor
Design Tools (Ally)
A small color-coded speedometer will appear in the bottom-left corner of each image you place in your Canvas course. Click on the speedometer to open a window where Ally suggests improvements to accessibility. It also provides a text box where you can enter alt text or mark the image as decorative:
PDFs (Adobe Acrobat Pro)