Very old code that annoys a lot;
Example: Toast.makeText(activityCompat, "", Toast.LENGTH_SHORT).show();
Here is written Toast.makeText(activityCompat, "", 0).show();
Visible and every invisible has this binary code
Apart from that, there are numerous code comments that increase the size of the app. Beck Data Code

Simple, functional app that everyone needs. Highly recommended. Excellent support for compiling and customizing the app.

Knowza pdf reader, pdf viewer, image to pdf is best app and run easyly and it's support android 11 12 thanks you team 91Code
And nice work 91Code