Meaningful pdf names?

I’m doing a lot of research right now and I love how I can organize documents in collections, use keywords etc. But when I’m actually WRITING with 20+ open windows (word docs, pdfs, browsers, file manager and of course scrivener, I need to be able to get to the open pdfs quickly.

I’m looking at renamed pdfs in my task bar:


Of course I have no idea what 628.pdf is and I constantly have to click through a bunch of pdfs to find the right one.

Is there any way to get meaningful pdf file names?

Thanks for any suggestions!