To remove annotations in PDF, you can refer to the following methods.
Method 1 (Recommend):
1. Right-click on the annotation and select Delete.
Method 2:
1. Open the left sidebar, and select View Annotation;
2. All the annotations in the PDF will be displayed. Right-click on the annotation and tap Delete.
If you want to delete all the annotations in a PDF, you can follow the steps below:
1. Open the left sidebar, and select View Annotation;
2. Click the icon ..., and select Remove All Annoatations.