The distinction that matters: manual action versus algorithmic demotion
When a site's organic traffic drops sharply, the first question is usually "did I get penalized?" That's the wrong question. The one that actually determines what to do next is different: is this a manual action or an algorithmic demotion? The two differ completely in origin, visibility, and fix, and treating them as the same thing is the fastest way to lose weeks searching in the wrong place.
A manual action is imposed by a person. Google's official documentation explains that it issues a manual action against a site "when a human reviewer at Google has determined that pages on the site are not compliant with Google's spam policies." A Google employee reviews the site, decides it violates the policies, and applies a specific sanction. That decision gets logged with a reason and the affected URLs in Search Console's "Manual actions" report, whether it covers a single directory or the entire domain. And it can be appealed: Google documents a reconsideration request process where you explain what you've fixed.
An algorithmic demotion is not decided by anyone in particular. It happens when an algorithm update, whether a core update that overhauls the ranking system as a whole or a topic-specific update focused on spam or helpful content, re-evaluates the site and automatically decides it deserves a worse position. There's no human reviewer behind that specific case, no entry in Search Console saying "your site dropped because of this," and no button to appeal. Google confirms this plainly in its core update documentation: there's no site-specific notification, only a general note that an update has rolled out, published on the Google Search status dashboard.
Mixing up the two cases has a real cost. A site owner who suffers an algorithmic demotion and mistakes it for a manual action spends weeks combing through Search Console for a notice that will never appear. One who suffers a manual action and mistakes it for an algorithmic demotion runs the opposite risk: passively waiting for the next core update, when what's actually needed is fixing the flagged issue and requesting a review.
The same drop, two different findings
A human reviewer at Google finds a spam policy violation.
Manual actions
Artificial links to your site
Affects one directory or the whole domain
The report names the reason and the affected URLs. The request is later judged against that same reason.
A core update or a topic-specific update re-evaluates the site automatically.
Manual actions
This report stays clean while traffic falls.
The only public record is the Google Search status dashboard with each rollout's start and end date, naming no domains.
A green checkmark rules out the manual action only, not the loss itself.
