Follows your device's light or dark setting until you choose.
Export
Download your book reading positions and bookmarks, saved books and course progress from this device, including your 14.01/6.830 progress, which is not synced to an account. Study Week progress is not included.
Import
Import previews what would change before anything is replaced, and keeps a snapshot of your current progress first.
What this does not do
This never touches your Study Week progress, and storage failure (a full or blocked browser storage) shows an honest message here rather than silently losing anything. Video embeds on activity pages contact YouTube directly to play video; that traffic is not covered by this export.