Leaf: PDF Reader (Fast, Lite, Simple and Open Source)

-Very fast PDF detect and sync
-Requires low memory space
-User-friendly experience with modern design
-Open-source project and library (github.com/onursert/leaf)

Settings
-Keep screen on when reading
-Automatic and fast PDF sync on startup
-Rotation lock for portrait and landscape mode

Library Features
-Edit PDF by changing the title
-Delete PDF from the library or phone memory
-Search PDF with title in the library
-View PDF list with list view (1 grid for vertical orientation) or grid view (2 grid for horizontal orientation or tablets)
-Sort and show PDF by title, import time or open time
-Show or hide import time and open time on interface

PDF Reader (Viewer) Features
-Save where I left feature
-Zoom in or out PDF pages
-Jump between pages in a PDF with PDF content list or seek bar
-Shows current page number (name) / page count in seek bar