Using Microsoft PowerPoint is an easy and effective way to present information for
a lecture in a class. However, there are steps that need to taken to ensure students
with visual impairments and those who rely on assistive technology can access the
Following these steps will help create positive learning experiences for all of our
Use PowerPoint’s Built In Templates
PowerPoint has built in slide templates that allow the user to have slide titles which
helps screen reader users navigate through a presentation. To make sure your slide
has a proper template right click on the slide and select Layout.
Avoid Insufficient Color Contrast
Having insufficient color contrast in a PowerPoint means that it contains text that
may not be legible. This mainly includes have light colored text on a light-colored
background or vice versa. Insufficient color contrast also applies to having a lot
text that is green or red because color blindness is a fairly common visual disability.
Examples of slides with insufficient contrast
Red/Green Insufficient Contrast
- It is not recommeded to use a lot of red and green colored text
Poor Text and Background Contrast
- Avoid using font colors that do not stand out/contrast well with the background. This
example shows dark pink text in front of a purple background and pink font in front
of a white background
Grey Insufficient Contrast
- Avoid using grey fonts and colors as much as possible, they could could be hard to
view by some students
Text Contrast Tips
Follow these recommended tips to improve text readability in your presentations:
- Use fonts with wide character strokes.
- Use a font size of at least 12px. If using a font with thin character strokes, use
at least 16px.
- Only use "thin" fonts on dark backgrounds.
- Use light text on dark backgrounds.
- Use dark text on light backgrounds.
- Avoid these color combinations:
- Green and red
- Green and brown
- Blue and purple
- Green and blue
- Light Green and yellow
- Blue and grey
- Green and grey
- Green and black
For more on color contrast in documents visit Blackboard’s Text Contrast Page.
Use Alternative Text Descriptions
Alternative text, or “alt text” describes the content of images, graphs and charts
for Screen readers and Braille devices. The descriptions should be 1 or 2 meaningful
sentences that best describe the image to someone who cannot see it. Adding alt text
to an image in Word is fast and easy.
How to add alt. text to an image (with clip)
- Add the image to your powerpoint slide.
- Right click on the image
- Click Edit Alt Text and type your description in the box provided.
If the image is for decorative purposes only and does not require an alt text, simply check the Mark as Decorative box.
Avoid Using Images of Text
While images of text might makeyour slides easier to create , especially when it comes
to complex scientific or math equations, they are not readable for users who rely
on assistive technology.
Avoid using images of text in any capacity within your slides whenever possible. If
an image of text must be added to your slide then be sure to add in alternative text to that image so all
users can consume that information!
Make Accessible Tables
Tables are very useful to organize data in a document. However, not taking the proper
steps to making a table accessible will make it very hard for screen reader and braille
users to understand the data. Tables should only be used when absolutely necessary
in organizing data and should avoid being used for decorative purposes.
How to make an accessible table (with clip)
- Create your table and add data to each of the table cells.
- Highlight the top row of your table.
- Click Table Design located at the top ribbon.
- Check mark the Header Row box at the top left of the page.
Making the top row a header row will allow for screen readers to recognize data more
Adding links in a document is a great way to provide sources of additional information.
However, using an entire URL link is not an accessible method. Using the hyperlink
in Microsoft Powerpoint is a much more accessible method.
How to make an accessible hyperlink
- Type out a phrase that you want to be clickable. This should be a phrase that is stand alone and is not a generic phrase like "Click
- Highlight your link phrase.
- Right click your phrase. A popup dialog box will appear
- Paste the URL in the “Address” box.
How to change hyperlink text color (with clip)
Whenever a hyperlink is created, the color of the text will automatically change depending
on the presentation's design layout. Sometimes that color may contain insufficient
contrast that could pose an issue for some students. The video below shows how to
automatically change the color of all of your hyperlinks.
- Go to the "Design" tab at the top.
- Click on the drop down menu under Variants on the right side of the page.
- Select Colors and Customize Colors.
- Change the font color for hyperlinks to increase its contrast.
Use PowerPoint's Accessibility Checker
If you want to make sure that your PowerPoint presentation is accessible, you can
use Word’s Accessibility Checker. Microsoft products have a built-in accessibility
checker which can help the document creator test the overall accessibility of the
document. The checker provides Inspection Results, feedback about the importance of
each item, and tips on how to repair issues. To access the Accessibility Checker click
on File, Info, Check for Issues, and Check Accessibility.