Images and other objects that present information can be accessibility barriers for people with low vision or blindness, or processing issues like dyslexia or other learning disabilities. Descriptive alternate (ALT) text can help users understand the content and purpose of images in your documents.
- Add ALT text to images using the ALT text tool in your authoring program. When writing ALT text, ask yourself what info would be needed to understand the image without seeing it.
- For complex images such as charts or graphs, add ALT text plus a link to a longer description.
- For logos, wordmarks, buttons, and similar images, use the text in the image as the ALT text.
- Indicate images that are purely decorative using the ALT text pane or image properties panel in your authoring program