Step 4: Make Images More User/Search Friendly With Alt Text
Images add to the quality of your web pages. In fact, you may have noticed how HubSpot always includes images in its blog posts. But to get the most out of your web pages, every image you use should include what's called an "Alternative Attribution," or "Alt Text." Alt text is a written version of what appears in the image that displays up whenever the image isn't able to load for one reason or another. Use your alt text to incorporate keywords, but do so in a way that is understandable and useful. For example, the Alt Text on the following image is: "SEO advice on images from HubSpot Pages."
we often forget the value of alt text - http://live-free-in-an-unfree-world.com