I would just like to thank the author and people who help him for their work.
Calibre is one of the few general public facing open source application that is best in class. It's also not maintained by a huge corporation, but mostly love of one man, and a few helpers.
It also has great user support for end users.
Never though about that but its true.
But the rest is absolutely best in class. In fact, it’s sadly the only in class for some things, I’m afraid.
I do use the web content viewer some, but mostly I just browse and download the books I want to my device.
FYI, the web viewer seems to work offline, it caches the files locally. If you haven't tried it, it's super nice. I have a 1TB time4vps storage server, and I sync my library to that server and run a headless calibre server with simple authentication to prevent crawlers.
I'm not sure whether it's one of his expected use-cases, but his work has made it so simple for me to get things from my writing group quickly onto my kindle. Plus, my own draft stories.
As someone who spends far too long on a computer screen as it is, the simple workflow of putting things easily on a kindle has been a real positive for me. And doubly so in this time of lockdown and Covid.
If the author does browse these forums - thank you so much for your work.