How could you go about displaying a widget with the latest comic?

You shouldn’t need shortcodes for this — there’s a widget called “Last Webcomic Link”. Try putting that in the sidebar!

In the part of the widget where it says “Link”, if you type “%medium”, it’ll show a medium-sized thumbnail of the comic for the link.

That’s the widget I mean, yes!

I don’t know for sure why it isn’t working 🙁

Where is it supposed to appear? The parts that say “(current collection)” mean it might only work on pages that are part of a specific comic collection.