What is measured
When a linked URL was crawled, the audit considers its response and any intermediate redirects.
Structure and on-page signals
Working internal links
This check matches discovered internal links with responses from pages that were included in the audit sample.
Pass criterion
Internal links point directly to accessible canonical pages without 404 errors or redirect chains.
What to fix
Fix href values in templates and copy, remove links to retired material and update addresses after migrations.
Automation limit
The free sample does not request every discovered URL, so an absent signal does not replace a full-site crawl.
Reference