How to Write a Good Image Description (or Alt Text)

By using the Object, Action, Context framework, it’s easy

Image descriptions, or alternative text (alt text), have become such an important feature in making sure our websites are accessible.

It has a much bigger affect than we think too. Around 1 in 4 people in the UK have a disability, which we can often overlook.

Writing effective image descriptions is not just a matter of compliance; it’s a practice that enhances the overall user experience.

By using the Object, Action, Context framework, creating impactful and clear image descriptions becomes straightforward.

Why is Alt Text Important?

Before diving into the OAC framework, let’s understand why alt text matters. Alt text serves several key purposes:

1. Accessibility: It ensures that visually impaired users can understand and engage with image content through screen readers.
2. SEO Benefits: Well-crafted alt text can improve search engine optimization, helping images appear in search results. This is more important than ever with AI taking over search results.
3. Content Comprehension: It provides context for images that might not load due to connectivity issues or other technical problems.

The Object, Action, Context Framework

The Object, Action, Context framework simplifies the process of writing descriptive alt text by breaking it down into three essential components:

1. Object: Identify the main subject or subjects of the image. This could be a person, an item, an animal, or any primary focus of the picture.
2. Action: Describe what the object is doing. Actions convey movement, activity, or a specific state.
3. Context: Provide background details that give additional meaning to the image. This could include the setting, the purpose, or any relevant circumstances.

Doing it

Example 1: A Corporate Setting

• Object: Group of people
• Action: Sitting around a table, discussing
• Context: In a modern office setting

Alt Text: A group of people sitting around a table discussing in a modern office setting.

Example 2: Outdoor Event

• Object: Family
• Action: Having a picnic
• Context: In a sunny park with trees and a playground in the background

Alt Text: A family having a picnic in a sunny park with trees and a playground in the background. AI generated drawing.

Conclusion

Writing good image descriptions is a blend of art and science, but by using the Object, Action, Context framework, the process is easy. Just don’t overthink it.

If you’re really stuck, upload the image to ChatGPT and ask it for a simple image description for you!