Penguin is the name of a Google algorithm update, first released in April 2012, that targets websites gaining rankings through manipulative links. Since 2016 it has run as part of Google’s core ranking system, and it works mainly by ignoring spammy links rather than punishing the whole site that received them.
How Penguin works
Before Penguin, links were easy to fake at scale. Sites bought thousands of links from article directories, blog comment spam, footer links on unrelated sites and link farms, often all using the same keyword as the anchor. Penguin was built to spot those patterns: unnatural volumes of keyword-rich exact match anchors, links from low-quality or irrelevant sites, and networks of sites linking to each other.
The early versions ran as periodic refreshes, months or even years apart. A site caught by one had to clean up its links and wait for the next refresh to recover, which left some businesses suppressed for a long time. Penguin 4.0, announced in September 2016, changed two things. It became real-time, so its assessment updates as Google recrawls the links. And it became more granular: Google said it now devalues spam by adjusting ranking based on the spam signals, rather than demoting the whole site.
Penguin is separate from a manual action. A manual action is a penalty applied by a person at Google, reported in Search Console, which you fix before requesting a review. Penguin is automatic and sends no notice.
Why it matters for a UK business
Penguin is history in one sense, but its logic still shapes how links are judged. Many UK sites built in the early 2010s still carry links from that era: directory submissions, “SEO packages” that promised a hundred links a month, or reciprocal link pages. Under the current system, most of those links are probably simply ignored. That means they are not hurting much, but they are not helping either, and anyone selling the same tactics today is selling something Google is built to discount.
Penguin’s principles now sit within Google’s wider spam policies on link schemes, which also cover paid links that pass ranking credit, excessive link exchanges and private blog networks. If a business still buys links in bulk, it risks either wasted money or, where the pattern is blatant, a manual action that is far harder to shrug off.
Common mistakes
- Blaming Penguin for every ranking drop. Since 2016 there are no separate Penguin updates to blame, and most drops have other causes, such as core updates, technical faults or stronger competitors.
- Disavowing large numbers of links out of fear. Google has said most sites never need a disavow file, and removing value from genuine links can do harm.
- Buying “Penguin-safe” link packages. If a link exists only because it was paid for, Google’s policies treat it as a scheme whatever the label.
- Rewriting every internal link to avoid keywords. Penguin was about links from other sites; descriptive internal anchors are fine.
How to act on it
Look at your backlinks in Google Search Console and in a tool such as Ahrefs or Semrush. You are looking for patterns, not individual oddities: clusters of keyword-heavy anchors, links from sites built only to sell links, or a sudden spike you cannot explain. If you find links you know were bought and they are still in place, stop the activity and, where you can, ask for removal. Keep a disavow file for cases where there is a clear, large pattern of manipulative links you cannot remove, or a manual action to resolve.
Then put the effort where it lasts: content and relationships that give other sites a reason to link to you, such as local press, trade bodies, suppliers and useful resources. That is the approach behind my link building service, which starts with an honest look at the links you already have.