Navigation and Images

What this is. When a group of links forms the navigation for your site, wrap them in a nav element. That tells assistive technology this is the navigation, so it can be skipped or jumped to directly.

If a page has more than one nav, give each an aria-label so they can be told apart.

Images carry meaning or they do not. That single question decides how you write the alt attribute.

If the image conveys information, alt must describe that information.

If the image is purely decorative, use alt="" so assistive technology skips it entirely.

Omitting alt altogether is the one option that is always wrong, because the screen reader falls back to reading the filename.