Shelf feature
Same library on every device
Sign in to sync last-read pages, collections, and Tutor threads across browsers and devices.
What you get
- Per-page reading progress in the cloud
- Collection pin and order follow your account
- Tutor chat history server-side
- IndexedDB byte cache speeds PDF reopen locally
Morning revision on phone, deep reading on laptop at night — Shelf keeps one continuous library instead of duplicate Downloads folders per device.