Internal and external link checker
Internal links are how a crawler finds the next page and how ranking spreads. A document with none is a dead end. External links are fine; this is a census, not a penalty.
What we measure
Each <a> with an http(s) href, resolved against the final URL. Same origin counts as internal. rel containing nofollow is tallied on top, not instead.
We do not crawl the destinations. A 404 behind an internal link is a different job. Relative paths such as /about are internal once resolved.
What to change
Give the page at least a few descriptive internal links — not “click here”, and not a footer-only graph. Nofollow belongs on untrusted user content, not on your own articles.
This is not a backlink index and not a broken-link crawler. It answers “what does this HTML point at?” after one fetch.
See the full audit in your workspace