Here is a link to code on Github for syncing Paperpile to Obsidian. It is python-based and requires the use of terminal to run the code.
I am quite sure that a better version of this can be made via AI coding to include python libraries capable of extracting highlights and annotation images, into the new notes generated in Obsidian.
It would be wonderful to not have to use a workaround/hack method in order to move annotations into standalone notes so that they can be used as study material or reference notes on a particular source and back-linked on particular topics.
I wonder the possibility of integrating such a “send to” feature from within Paperpile (e.g. send to Notion folder; send to Obsidian) for a much cleaner workflow. Or alternatively, like the Word Plugin, creating an official plugin which is able to pull from the Paperpile databse for this purpose.