I'm trying to figure out how to open PDF file in metapdf from Paperfile? I can open the pdf in Google Drive first and then use metapdf. I wonder if there is a way to open the google doc directly in paperfile and annotate with metapdf. Is this feature currently available or still work in progress?
Please use our new PDF viewer (which is basically MetaPDF but still in beta).
In Settings > Browser Integration > PDF viewer choose "Viewer with annotations (beta)"