This shortcut shows the highlighted source of a webpage, and it must be run from a browser's share sheet. It shows the current state of the webpage, after any changes made with JavaScript, and it does it locally, without redownloading the page.

It's also an example of the astounding possibilities of the "Run JavaScript in Safari" action. Syntax highlight via Prism (prismjs.com).

First published at https://www.reddit.com/r/shortcuts/comments/9w7h1l/view_current_page_source/ (Nov'18).