Towards an Open Authoring Tool for Accessible
Slide Presentations

#### Mirette Elias, Abi James, Steffen Lohmann, Sören Auer, Mike Wald

The 16th International Conference on Computers Helping People with Special Needs (ICCHP 2018)
July 11-13, 2018University of Linz, Austria

• Web app for collaborative authoring of inclusive & accessible slides

• 17 European partners (platform development, contents, trials, etc.)

• Collaborative creation (and hosting) of OER materials

• SlideWiki = Wikipedia for Slides

• Collaborative editing

• Multi-device delivery

• Translation

• Commenting, discussion

• Question generation

• Accessibility

### Objectives

• Which content types, often used in slides, can impact accessibility?

• What approaches can be used to identify and remediate accessibility issues?

• Which approach to checking and improving accessibility issues do authors prefer?

### Example of content in slides

This is a text box

• Text bullet 1
• Text bullet 2

1. numbered list 1
2. numbered list 2

Location Max Min
Linz 24°C 14°C
London 23°C 15°C

$$e=mc^2$$

### Accessibility Requirements of Slides

Slid e content element Accessibility added by the system Author actions required to improve accessibility HTML heading tags Slide should have a unique title. HTML used for text styling, lists and hyperlinks. Lists and styles are added using the authoring toolbar. Interface for image alt text & captions Alt text should be meaningful. Content contained within an accessible iframe using the keyboard and assistive technologies. Each iframe should have a title. Embedded content must be accessilbe e.g. video/audio media, either include captions and/or an audio description, or a transcript and description. Equations are embedded as MathML. Avoid adding equations as images Appropriate HTML tables. Interface for setting headers, caption, text summary. Define headers and provide a caption or text summary of the table if needed.

### How can we can encourage authors to improve accessibility?

1. Require
2. Guidance
3. Encourage
4. Rate
5. Crowd-source
6. Automatic
• Identified 6 approaches for encouraging authors to improve accessibility

• Authors were surveyed to assess preferences

### 1. Require

"I am happy to be required to fix accessibility issues before saving my slides to make them accessible for all users."

### 2. Guidance

"I  would like to see accessibility tips and hints while editing my slides to help me make it more accessible to all users."

### 3. Encourage

"I would like to see a list of accessibility warning when I save a slide and have the option to fix them or ignore them."

### 4. Rate

"I would be happy for my decks to be rated in terms of accessibility as this would encourage me to fix any accessibility issues."

### 6. Automatic

"I would like the accessibility of my slides to be fixed automatically, even if this might not resolve all the issues or be accurate."

"I would be encouraged to fix accessibility issues on other slides in order to increase my reputation or rating."

### Survey Results: Accessibility Approaches

• Most popular approaches were "Encourage" and "Guidance".

• "Automatic" was least popular.

### Spending Time for Accessibility

How long are you willing to spend fixing accessibility issues for 1 slide?

### Conclusions

• Six main elements within slides may require content authors to undertake actions to ensure the slides are accessible.

• Three elements must be checked to ensure content is appropriate to the context.

• Author's willingness to spend time fixing accessibility issues could be increased through an efficient checking process.

• SlideWiki platform will warn authors of potential accessibility issues and provide them with guidance as they create content.

### Thank you

Presented by Abi James a.james@soton.ac.uk

University of Southampton

Access this deck at https://slidewiki.org/playlist/59