Jonathan Brinley

The standard excerpt field will appear on pages, just as it does on posts.
Additionally, there is a new widget to display the excerpt of a selected page.
Created by <a href="http://flightless.us/" rel="nofollow ugc">Flightless</a>

Page Excerpts

The plugin is built for something very specific, and does it perfectly.

Simple but effective

Adds an excerpt field to pages, and provides a widget for displaying page excerpts

markupus

The plugin extends the Gutenberg sidebar settings with two buttons that help you create titles and an excerpt for your content based on a blog post.

OpenAI Content Assistant via ChatGPT | Markupus

ChatGPT - OpenAI helps to create a title & an excerpt based on the content of post using ChatGPT API.

Page Excerpts vs OpenAI Content Assistant via ChatGPT | Markupus