You can save a webpage as a PDF on a Windows computer using any installed web browser's Print menu and selecting "Save as PDF ...
You can save Outlook email as a PDF on a Mac or PC for to keep a copy of an important correspondence. Here's how.
Tap Save to Files. Then, tap "Save" in the upper-right corner ... Select the file you want to convert on your computer or phone. Select PDF in the Convert to dropdown. You can upload more than one ...