[lkmiller]

Again, in my experience, most NetGalley books were reflowable epubs. Send-to-kindle converted to AZW3. Or at that time, you had the option of Adobe protected epub.

In the rare case, when it was a pdf, send-to-kindle still converted to an AZW3 which was a completely unreadable mess. But you had the option of Adobe protected pdf. So I would get that and read on a larger screen.

If you could somehow get the send-to-kindle to arrive as AZW4, then you could remove the DRM and use Kindle Unpack to extract a pdf you could read on whatever you like. But now your only real option for pdfs is the Thorium app I guess. Don't know how that is.