how to write alt text

All images, whether photos or graphics, get alt text assigned to them.

Alt text for photos should include the following:

• When and where was the photo taken.
• How many people are in the photo.
• A basic description of the action of these people and any basic relevant emotions or expressions is fine.
  any important details about the photo such as weather conditions, landmarks, signs, action, etc.

Alt text for infographics and other data visualization should include:

• The image or chart type.
• The type of data or what’s in the image.
• The reason for including the image or chart.

Alt text for art or drawings should be written in a similar manner to photos, noting that they are art and what kind of art.

Keep alt text for social media to the minimal descriptions of need-to-know visual information. Max character limit is usually 1000 characters.

Exception: Do not add alt text to purely decorative images.

Also see alt text.