can a password protected pdf be opened with a password manager app (Keeper, LastPass, etc..)?

When travelling is quite inconvenient to open password protected pdf's, especially when you have complex/long passwords. I usually use a password manager to automatically login to certain websites, this is something I can control from any of my devices, i.e. a tablet, laptop or even smartphone but seems this is not possible as the password filling cannot be done by the password manager.

I would appreciate any feedback/alternative solution, thanks a lot !