Size 3
100%
📄

Open a PDF

Tap to browse or drag a PDF here
Works offline after first load

Ready Pen — 100%
✏️ Apple Pencil
⚠ Offline
✓ Ready offline
📄
Install Folio
Add to Home Screen for offline use

Save Document

💡 Annotations are auto-saved locally every 4 seconds via IndexedDB. You'll never lose your work.

Google Drive

Sign in to open PDFs from Drive and save annotations back automatically.