Support

Search or PDFs are unavailable

Saved material remains available, and downloaded PDFs can be opened offline. Retry later or check the original paper in a browser. Remove and redownload a damaged PDF; clearing thumbnails does not remove the full PDF.

Saving a paper does not itself download its PDF. Download it and confirm it opens before relying on offline access.

Backup and restore

Export current data before restoring. Paper-library and link backups are separate. Link backups contain complete URLs whose query parameters or fragments may be private. Choose a trusted destination. Restore replaces the corresponding data and preserves an earlier local copy. Manage exported files yourself.

HarmonyOS feature scope

HarmonyOS local links do not fetch webpage or image previews; opening a source uses the browser. Read-aloud uses offline speech. Cloud AI, discussions, video export and system translation are not enabled and do not send questions to a model provider.

Accounts and password recovery

This release has no developer-operated account, sync, discussion or cloud AI service. Sign-in, registration and password recovery are disabled; password recovery cannot enable those services. Your reading data and backups remain on your device or in a location you choose.

Service availability in this release

This release has no configured account service, sync, discussions or cloud AI. These features are unavailable and reading data stays local. Online paper sources and websites that you choose to open or request still receive the corresponding network requests.