Why breadcrumbs should not be used as a primary Navigation?

1. When should you not use breadcrumbs?
2. Should breadcrumbs be in NAV?
3. Are breadcrumbs correct and lead to actual page hierarchy?
4. Are breadcrumbs good for SEO?

When should you not use breadcrumbs?

Breadcrumbs aren't necessary (or useful) for sites with flat hierarchies that are only 1 or 2 levels deep, or sites that are linear in structure.

Should breadcrumbs be in NAV?

Because Breadcrumbs work as a secondary navigation aid, it should be placed above the content. The Nielsen Norman group conducted user tests and found that users expect breadcrumbs at the top of the page. A good placement for breadcrumbs is below the main navigation bar and above the page title.

Are breadcrumbs correct and lead to actual page hierarchy?

As breadcrumbs are used to track the user's current position in the website's or application's hierarchy, they should not be present on the homepage or the highest point within the site hierarchy. Finally, provide users with the facility to navigate between the different breadcrumbs with the tab key.

Are breadcrumbs good for SEO?

Breadcrumbs help users navigate your website and they help Google categorize and navigate your website. That makes breadcrumbs kind of a big deal for SEO.