All Images not calling alt text

1. Should all images have alt text?
2. How do I get alt text from an image?
3. Is Alt text a legal requirement?
4. Which images should you include alt text for?

Should all images have alt text?

Each image should have an alt text. Not just for SEO purposes, but also because blind and visually impaired people won't otherwise know what the image is about. A title attribute is not required.

How do I get alt text from an image?

Chrome™ browser: point to the image with your mouse, right-click and choose Inspect from the quick menu (or use Ctrl-Shift-I on keyboard). A new pane will open at the right of your screen with the HTML code highlighted for that element. You can then view the alt text and other attributes for the image.

Is Alt text a legal requirement?

While alt text is not required for a standard commercial or informational business (as far as I know), it does help with long tail traffic, though not always the kind that converts.

Which images should you include alt text for?

Alt text is a tenet of accessible web design. Its original (and still primary) purpose is to describe images to visitors who are unable to see them. This includes screen readers and browsers that block images, but it also includes users who are sight-impaired or otherwise unable to visually identify an image.