WordPress post excerpts are text summaries of posts and pages. They help visitors understand what the post is about in just a few sentences. Typically, these excerpts also contain a link so that the reader can easily read the complete post if they’re interested.
Excerpts can be produced manually or automatically. You have the option to write your own blurbs (which we recommend). However, if you don’t have the time to write them yourself, WordPress will automatically use the first 55 words of your post as your excerpt.