Using images in blog posts has several benefits, including:
- Providing a visual cue to the post’s topic,
- Enhancing or illustrating a point made in the post,
- Providing content that can only be represented visually, and
- Breaking up long blocks of text.
Why is Omitting Alternative Text for Images an Accessibility Sin?
Individuals with sight impairments who use text-to-speech screen readers – software that reads aloud text on the screen – cannot access information presented graphically because screen readers cannot interpret images to read them aloud. Without alternative text provided for images, these individuals miss out on this content.
How to Absolve this Sin?
The solution is to use text equivalents or alternative text to provide the same information as that provided by images and graphics. Be sure to add an alternative text for every image. When writing alt text, consider what you would say about the image if you were reading aloud your post over the phone. If the image is purely eye candy, use the empty or null alt (alt=””).
Lesson 3 of Blog Accessibility Mastermind discusses alternative text in great depth and provides tips on writing them. Check it out!