How to save a full webpage (incl. scrolling) as a PDF

There has been no change in Safari. But sometimes web pages will render content dynamically using Javascript. When they do this, there is nothing to export to PDF. It doesn't draw the actual page until you scroll down to it.

The Export as PDF works for me in Sequoia.

Have you installed and run any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac?

Give this a try: boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.

NOTE 1: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files

NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.

Try the Opera One( browser, here's version: 102.0.4880.46) (x86_64) in Mpjave 10.14.6...

Opera One(version: 102.0.4880.46) (x86_64)Opera One(version: 102.0.4880.46) (x86_64)Opera One(version: 102.0.4880.46) (x86_64)

As etresoft noted above…

"But sometimes web pages will render content dynamically using Javascript. When they do this, there is nothing to export to PDF. It doesn't draw the actual page until you scroll down to it."

Firefox 141.0.3 (and earlier versions) let you save a current website as a paginated PDF from Firefox's print menu.

You can save a long webpage as a single page PDF in Safari/Sequoia by selecting File ➙ Export as PDF.

How about ▷ File ➢ Print ➢ Save As .PDF?

What's the webpage?

You click the right-most ≡ symbol on the Firefox toolbar and on that menu that opens, select Print… Then, on that Print panel, you want this: