How to sign, annotate, and edit a PDF on a Mac computer using Preview

You can edit a PDF on your Mac with Preview, an app that's built-in to your computer from the start. You can use this program ...

How to password protect a PDF in Adobe Acrobat Reader and shield your sensitive data

To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.
Macworld

Wondershare PDFelement: The smart alternative to Adobe Acrobat

Wondershare has given PDFelement a huge upgrade, with new AI tools that speed up and simplify how you work with PDFs ...

This Adobe Acrobat alternative now only costs $30 for a lifetime license (was $129)

Right now, you can get a SwifDoo PDF Pro Perpetual Lifetime License on sale for $29.97.

Adobe PDF power + Office essentials = a smart workflow upgrade for just $90

For just $89.99 (MSRP $553), you’ll get a 3-year license to Adobe Acrobat 2024 Pro and a lifetime license to Microsoft Office ...