PowerPoint Presentation
Accessibility issues: Images and the use of ALT TextScreen
reader users, such as the visually impaired, rely upon ALT text for
a textual representation of an image that they may not be able to
see. If the image adds value or meaning to the resource adding ALT
text enables a screen reader user to interact with the resource in
the same way as everyone elseAn image without ALT text(Screen
reader may announce picture or ignore image without ALT text)
Image with ALT text(Screen reader reads ALT text)
Click for slide read by screen reader JAWSNote: The eLearning
Team banner is an image with ALT text. This gets read out by JAWS.
The footer image does not have ALT text associated with it.
1
Accessibility issues How to add ALT textIn MS Word and
PowerPoint (2010)Right click on image (it may require 2 right
clicks)Select: Format Picture
Select: Alt textType alternative text into the Description
boxFor detailed instructions for all versions of MS Word see:
http://webaim.org/techniques/word/#provide20072
Accessibility issues How to add ALT text in MyAberdeenIn
MyAberdeen, using the content editor:Add Alt Text to the Image
Description box that appears when adding an imageLeave the Title
box empty
For further advice contact [email protected]
Accessibility issues Appropriate ALT TextIn cases where an image
adds no value to a learning resource, and is included merely for
visual effect, good etiquette requires an author to insert (double
parenthesis) in the Alt text field (apart from in PowerPoint where
doing this is counterproductive and the ALT text field should be
left blank) . If the ALT text field is left blank most screen
readers will announce picture and the user will be left wondering
whether or not the image was important. On detecting most screen
readers will skip past the item (apart from in PowerPoint where the
screen reader would read double parenthesis...) Advice on the
appropriate use of ALT text can be found at
http://webaim.org/techniques/alttext/
Accessibility issues ALT text and ImagesLinks :University of
Aberdeens eLearning Team accessibility guide:
http://www.abdn.ac.uk/eLearning/accessibility/checklist/alt-text/
Alternative Text in context:
http://webaim.org/techniques/alttext/
WebAims Microsft Word Accessibility article (including the use
of ALT text): http://webaim.org/techniques/word/#provide2007
Creating accessible PowerPoint files:
http://webaim.org/techniques/powerpoint/
Add alternative text to a shape, picture, chart, table etc in MS
Office:
http://office.microsoft.com/en-us/support/add-alternative-text-to-a-shape-picture-chart-table-smartart-graphic-or-other-object-HA010354748.aspx?CTT=1