When I try to print, or Save As PDF, the preview is not acceptable, and varies between landscape and portrait.

Okay, besides landscape and portrait, please post a screenshot of what's not acceptable in Firefox and show the same in Chrome so we can better understand what's not acceptable.

Device name HP ZBook-17-G4 Processor Intel(R) Xeon(R) CPU E3-1535M v6 @ 3.10GHz 3.10 GHz Installed RAM 64.0 GB (63.4 GB usable) System type 64-bit operating system, x64-based processor Edition Windows 11 Pro Insider Preview Version 22H2 Installed on ‎04-‎Nov-‎22 OS build 25236.1010 Experience Windows Feature Experience Pack 1000.25236.1010.0

It's Yahoo mail? Firefox has some known glitches with print layouts that feature a table embedded in a table cell. Firefox may insert large gaps, and drop entire pages after the initial page of content. There is a bug on file and hopefully it will get some attention next year (it's too late to see any changes this year).

One crude workaround is my add-on that allows overriding certain page layout features. On the plus side, it allows getting more content in the printout. But on downside, it breaks side-by-side layouts, so it won't look like the original. It won't always make sense to use it.

In case you want to try it, you can install from the Add-ons site: https://addons.mozilla.org/firefox/addon/printable-the-print-doctor/

Because the "print optimized" format message opens in a popup window without the full toolbar, you use the right-click context menu to access the add-on commands. Please refer to the attached screenshots (original preview, using the add-on menu, updated preview). If at any point the layout of the message is completely wrecked, you can reload it using Ctrl+R.

Thank you jscher2000. I suspect your program is useful, but for me, it is just as simple to open Edge or Chrome to get a PDF and/or a printout. I am a Firefox user from ... Netscape. I was curious to see if my interest was shared with others, or if others even noticed. Maybe not.

I have also noticed that many modern web pages do not Save As PDF very well either. I guess the public doesn't care anymore. Or, they just never thought about it. Maybe it's youth. Maybe they think they can always find a copy next year.

I was curious to see if my interest was shared with others, or if others even noticed. Maybe not.

Others noticed. And reported it. That's why there is a bug report on file.

Two initially attached files have been deleted.