How to change the default PDF attachment for a paper item in Zotero?

JSYU

I have a paper item that initially had only one PDF attachment. Recently, I updated the paper and the item now has a second PDF attachment. However, when I double-click the paper item, it always opens the old PDF attachment by default. So, how can I change the default PDF attachment that opens when I double-click the paper item? Thanks.

mjthoraval

At the moment, it will always open the first added PDF attachment as primary (default) attachment.
You can remove the old attachment and add it again manually.
Or use the PDF Kit plugin in Zotero 6: https://github.com/sharpevo/zotero-pdfkit?tab=readme-ov-file#pdf-kit-for-zotero

This is an old problem:
https://forums.zotero.org/discussion/29638/how-to-set-default-pdf-to-be-displayed-via-view-pdf/
But the devs has mentioned before that a fix is planned: https://forums.zotero.org/discussion/comment/436279/#Comment_436279

JSYU

Thank you very much. My problem is well solved. The PDF Kit plugin is useful.