Launch date: April 24, 2012
Hazards: Spammy or irrelevant links; links with over-optimized anchor text
How it works: Google Penguin’s objective is to down-rank sites whose links it deems manipulative. Since late 2016, Penguin has been part of Google’s core algorithm; unlike Panda, it works in real time.
How to adjust: Monitor your link profile’s growth and run regular audits with a backlink checker like SEO SpyGlass. In the tool’s Summary dashboard, you’ll find a progress graph for your link profile’s growth. Look out for any unusual spikes: those are reason enough to look into the backlinks you’ve unexpectedly gained.
The stats that we know Penguin takes into account are incorporated into SEO SpyGlass’s Penalty Risk formula. To check for penalty risks, go to the Linking Domains dashboard, navigate to the Link Penalty Risks tab, select your links, and click Update Penalty Risk. When the check is complete, check with the Penalty Risk column, and make sure to look into every link with a score over 50 percent.
For a more detailed guide on link auditing, jump here.