Another reason is that if you're using an image as a link, the alt text for that image will be treated similarly to the anchor text of a text link. However, we don't recommend using too many images for links in your site's navigation when text links could serve the same purpose. Lastly, optimizing your image filenames and alt text makes it easier for image search projects like Google Image Search to better understand your images.
In order to rank higher on Google in 2019, consider starting from the ground up with your website and SEO strategy. Try hiring experts like Optuno to build you a custom SEO-friendly website for your business. The professionals at Optuno also provide hosting, monthly maintenance, and a dedicated team to take care of the site. It also offers a 100% money-back guarantee if you’re not satisfied. Click here for a free consultation.