Alt-text is a great way to add accessibility function to your website and improve your site's SEO. By adding alt text to all of your images, you are providing a text alternative for those who cannot see the image. This also helps those who are using a screen reader to navigate your website. Alt-text is also a great way to include keywords in your website's content. When you add alt text to an image, be sure to include relevant keywords that describe the image. This will help improve your site's ranking in search engine results pages (SERPs).