Thank you, VladimirS. From
what I can find about the 10th gen kindle, it is the same resolution as the original, so try using the
-dev k2 option with k2pdfopt from the command line or select "Kindle 1-5" in the device menu in the Windows GUI. Contrary to the what the command-line help says, the default device setting is 300 dpi for the kindle paperwhite 3 / voyage / oasis). To see all built-in devices, run "
k2pdfopt -dev ?" or pull down the device menu in the Windows gui. Beyond that, it depends on what you are converting. Most typical book format documents will do well with the k2pdfopt defaults. If you have a few minutes, try watching the video on
this help page.