What is measured
The audit collects internal href values and counts unique destinations found on each sampled page.
Structure and on-page signals
Internal link presence
This check confirms that pages are connected by normal crawlable links instead of remaining isolated.
Pass criterion
An important page receives contextual links from navigation, hubs, articles or related resources.
What to fix
Add meaningful links with clear anchor text and include new pages in the site’s navigation structure.
Automation limit
A high link count is not automatically good internal linking; every connection should help a visitor continue a specific task.
Reference