PDF Reader Pro supports various annotation tools. If you want to delete the annotation such as Highlight, Underline, Strikeout, Freehand, Text Box, Stamps, Signatures and etc, just do as follow:
1. Quit the annotation mode and click on the annotation directly, context menu will pop up;
2. Then choose to remove the annotation.
3. If you want to remove all annotations, you can tap More icon and choose Remove All Annotations.
4. Or you can go to PDF Tools and tap Remove All Annotations, then select a file;
5. Choose OK when you see a pop-up box.