Offline PDF · this browser only

Your local paper desk, even when the network leaves.

Choose a PDF or reopen one already kept in this browser. Search, page navigation, highlights, notes and browser speech stay local; private cloud copies and provider sync deliberately remain unavailable offline.

Ratdolt PDF · local-first by construction

Your PDFs become
research surfaces.

Read, search, listen, highlight and annotate on this device. A PDF reaches private account storage only after you explicitly save a cloud copy.

Choose a PDFPDF only · up to 50 MB · encrypted files supported locally Keep the file in this browser for one-click reopening

Private account cloud

Optional, never automatic

Sign in to reopen an explicitly saved PDF and its annotations across browsers. Local files continue to work without an account. Sign in →

Your PDFs becomeresearch surfaces.

Your PDFs become
research surfaces.