It saves the page to local disk transformed to a markdown file. I've tried it and it doesn't download images though, it just generates links to the online image.

If you don't mind markdown, for a good clipper I'd recommend the one from TagSpaces. It can save the page into Firefox one-file .mhtml format or plain .html, and it comes with a "simplified page" option to remove navigation.

https://chrome.google.com/webstore/detail/tagspaces-web-clip....