Understand how alt text makes images accessible to visually impaired users as well as identifiable to search engines.
Alt Text Definition
Alternative text (alt text) is a short description that identifies an image. Alt text appears in three different instances:
- Alt text provides image descriptions to search engines, helping them to understand the image and index them properly helping with your SEO rankings.
- Alt text will be displayed in place of an image if an image file cannot be loaded.
- Visually impaired users using screen reading software will be able to understand what is happening in the image utilizing alt text.
Your alt text should be as descriptive as possible, but kept relatively short as the most popular screen readers cut off alt text at around 125 characters. Alt text also provides another opportunity to utilize your keywords!
Alt Text Example
If you have an image of children raising their hands in the classroom, you might type the following alt text
- Children – This alt text isn't very descriptive. Yes, this is an image of children, but what are they doing? Where are they?
- Children raising hands in Sunday School – This alt text is much more descriptive. There are children who are raising their hands to answer a question in a Sunday School classroom.
Updating Alt Text
You have the ability to add/update alt text for all images you add to your website. If you add an image to a text editor, slide show, banner, etc. a field will appear to add your alt text.