Quick Guide for Android

Flattening makes the PDF contents static, so that your annotations, signatures and form fields can’t be edited. Here are the steps: 

1. Enter the reading page, tap More icon and choose Save as Flattened Copy;

2. Or go to PDF Tools and tap Create a Flattened Copy, then select a file;

3. The flattened copy will be automatically saved in Flattened under Local.