Hello everyone, I need advice. This problem has been on my mind for a very long time.
I'm just looking for the most secure and privacy friendly PDF reader for cross-platform use.
My huge worry is that the PDF reader App I'm using will "call home" to someone on the Internet and upload information on what I'm reading on the PDF reader App. It could also transmit other types of data on the particular device I'm using whether it's my PC/Mac/Android/iPad.
I've done a lot of research and it seems like these two open source PDF readers are clear standouts when it comes to user privacy and security: XPdfReader and Sumatra PDF:
https://www.xpdfreader.com/
https://www.sumatrapdfreader.org/free-pdf-reader
Thank you for any suggestions!