Is there a way to print a webpage as PDF in landscape mode using Safari?
By default, macOS does provide basic print options of paper size and orientation in the Print menu, even if you don't have a printer. (Though these may need to be 'revealed' using the &quot;Show Details' button.
However, I have always recommended that if you don't have a physical printer, there may be benefits to creating a 'Generic PostScript Printer' print queue.

The &quot;PDF button&quot; in the print menu does rely on the CUPS print system, and that usually means having some form of print queue.
The other option is to use a dedicated print-to-file queue, like CUPS-PDF.