It's more the question of what you download, to view offline. You have to have some static page, at some point. If the page were to be created, dynamically, as you read it, (to keep the likes and etc. up-to-date, and incorporate changes to your npub, like adding follows) then you would need to stream the changes. Which is difficult, when working offline or on ePaper.
If you create it server-side and then pull the finished page, then it'd have to be stored someplace, before moving it to your device. I guess, you could store it in your browser cache, on a different device, but then you have to have a device in-between the server and your ePaper device.
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