screenshot
A screenshot is an image of a computer screen or a website.
Website screenshots can be shown with bookmarks in the reply-context or as a photo.
Screenshots can also be displayed in image meta tags, allowing people to see a preview of one of your web pages before they open the link.
Indieweb Examples
Aaron Parecki shows screenshots of websites in his bookmarks.
Aaron Parecki automatically uploads screenshots to his media endpoint to quickly share a URL [1].
Christian Weiske uses phancap to display small screenshots on his private bookmark service.
capjamesg shows screenshots of a web page in his Open Graph preview images. This is powered by a puppeteer script. The code is available on GitHub.