I’m fairly sure there’s nothing out there like this, but worth asking. I have some magazines I grab monthly from LL as PDF files and there’s not really a smooth or graceful way to get them available to read on my iPad.
So far I have had to set up Nextcloud and access them that way, but I wondered if there was anything out there that was a bit like Readly with a nice web interface that would allow me to browse, read and download the files. Nextcloud is …ok but it lacks the ability to ‘present’ the files in a nice way.