Jotdown อ่าน PDF แอป สำหรับ Android คำอธิบาย
Jotdown is an open-source document manager and PDF reader built for researchers, students and academics. It works 100% offline and is focused on privacy — no account required, no data leaves the device.
Features:
- PDF reader with text-layer extraction
- OCR via open-source PdfBox
- Sticky note annotations and vector drawings (stylus + palm rejection)
- Academic citation (fichamento) generator
- Export to Markdown (.md), TXT and PDF
- ABNT citation format support
- Local folder organisation system
- Offline dictionary (Portuguese / English)
- Backup and restore (local ZIP)
- Dark mode support
