What is an Alternative Text?
Alternative text is a simple description added to an image that helps individuals using assistive technology understand what the visual image is and its purpose or function so they can fully experience and engage with the digital content or website.
Important Considerations for Writing Alternative Text
- Alt-text should be meaningful, simple, and descriptive.
- Keep it concise: Aim for 80-100 characters whenever possible.
- Describe the actual contents of the image without adding unnecessary details.
- Avoid fabricating the contents of the image.
- Do not repeat information that is already mentioned near the image.
- Do not include phrases like “image of,” “screenshot,” “screen capture,” or “photo of”. Screen readers automatically announce that it is an image.
- If the image is purely decorative and adds no value to the content, mark it as decorative instead of leaving the alt text blank.
How to Write Alternative Text for a Photo of a Person
Headshots are a common type of image shared digitally by the university. When writing alt text for a headshot, ensure it identifies the subject and provides relevant context for those who cannot see the image.
- Indicate that it is a headshot - By stating that the image is a headshot, you automatically convey that the person appears in a professional setting, likely wearing business casual attire and smiling. You do not need to describe these aspects in detail.
- Include the person’s full name - Even if the name appears nearby, the alt text must still identify the person in the image.
- Describe any relevant actions or background details - If the person is holding an object, performing an action, or sitting in front of a meaningful background, include this information in the alt text.
- Avoid over-describing personal features - Avoid subjective descriptions of gender, ethnicity, race, clothing, hair, or facial features unless they are critical to understanding the image’s purpose and are not provided elsewhere in the content.