There's no one click setting to save as one page, but there is a workaround. Simply save as a very long page (using fixed height setting), then crop it in a PDF editor.

I save news articles and other documents in PDF format.

This extension has greatly improved the problem of header URLs being cut off in the middle, long sites being cut off into small pieces, and the composition being messed up!

In addition, by setting up shortcut keys and incorporating them into mouse gestures, PDFs can now be saved with a single action!

I think this is a very good thing, thanks to the author!

Reformats to HUGE font, extends a 2-page pdf to 13 pages. There must be some means of controling the font size, but I can't find it. Until this has been addressed, then no thank you.

Didn't work. I just used the browsers print command.

Does nothing special, pdf render is basically the same as the browser generated.

If you click on the PrintPDF button on the toolbar for a page, it opens up a dialog box for saving the page. HOWEVER, if you click on the button a second time for the same page, nothing happens.
Secondly, the colors of the page are not rendered correctly when using Dark Reader

Brilliant, works perfectly, no messing around. I tried a few others until I found this. The best for my needs! Many thanks!