Items in iCloud Drive stream on demand as you read. Heading off the grid? Download a permanent offline copy: resumable, non-destructive and visible in Files.
A site folder in iCloud Drive can be large. Waiting for the whole thing to come down before you read the first page is the kind of friction that makes people give up on local reading altogether.
Items in iCloud Drive stream as you read. Assets download while you go, the way video streaming works, with no upfront wait before the first page appears.
Heading somewhere without a connection? Download the item for offline reading. The download is resumable, so a dropped connection does not send you back to the start, and it is non-destructive: your original stays exactly as it is.
What you download is not locked inside the app. It shows up in Files, where you can inspect it, move it or delete it like anything else on the device.
An offline banner makes it clear which items remain available without a connection, so you find out on the ground rather than in the air.