Yoast SEO plugin features and benefits Optimize every page for up to 5 keywords In the Yoast SEO Premium plugin, you can pick up to 5 focus keywords. These are the keywords you’d like your post or page to rank for in the search results. We then run a check on your content to check whether you’re using the keywords often enough – but not too often – and in the right spots. Yep, Yoast Premium makes it really easy to seduce search engines. In the free version, you can only set 1 focus keyword. That means you’ll have to choose between keywords. In both versions, Yoast SEO doesn’t only boost your ranking in the search results, but also your morale!