iPhone: bulk move ALL voice memos + ALL pdfs generated from Safari page prints (pdf-exports using "Books") to pc

voice memos:

I have 100s of voice memos that I recorded using the Apple voice recorder standard app and I want to get them on my pc altogether in one go.

pdfs:

I often save mobile Safari pages as Books which are then automatically saved (very quickly and well-formatted) as pdfs. On a website opened in Safari, you can choose the "send to"- button and then the orange Symbol for books. I have houndreds of self-generated pdfs in ibooks, and I have googled and tested for a longer time how to transfer them to my pc (see the details of these tests in the answer section).

Is there any trick to bulk move ALL voice memos in just one go + ALL pdfs in Books to the pc in just one go? I am happy about ANY way to reach this.

Please mind: I do not want to save every voice memo / pdf, piece by piece, in a cloud or app nor send each of them, piece by piece, by mail. This costs too much time and nerves and is not a bulk move.

For PDFs, I found an alternative solution that requires an iPad and the FileBrowser app:

1. On the iPad, activate Stage Manager.
2. Open both the Books app and the FileBrowser app and place them side-by-side.
3. In FileBrowser app, navigate to the desired destination folder for your PDFs (I used my NAS via SMB, other target locations should work as well).
4. In the Books app, navigate to the desired collection of PDFs, select all PDFs.
5. Using drag&drop, drag one of the selected PDFs on the FileBrowser app window.

FileBrowser will first show an import progress bar, and then copy the files to the selected destination folder.

Caveat: if some PDFs have the same title, only the first (?) file will be imported using this method. You can still drag these files one by one from Books to FileBrowser, and choose to keep both files. However, this does not work if multiple files are selected.

Tested with iPadOS 17.2.