The excerpt is an optional summary or description of a post; in short, a post summary.
The Excerpt has two main uses:
- It replaces the full content in RSS feeds when the option to display summaries is selected in Dashboard → Settings → Reading.
- Depending on the theme, it can be displayed in places where quick summaries are preferable to full content:
- Search results
- Tag archives
- Category archives
- Monthly archives
- Author archives
For your posts excerpts to be displayed correctly, you’ll need to use one of these options:
The More Tag
Use the Insert More Tag button on your blog’s text editor (next to the spellchecker button).
This will truncate your post content in a particular word or paragraph.
In the example below, the homepage would only display “This is my excerpt” with a Read More link at the bottom. Then, it would show the whole post: “This is my excerpt. This is a ‘More’ tag (…)”.
Insert a manual excerpt of your post in the Excerpt box, while you’re adding or editing your post.