1. Open "Adobe Acrobat and Professional", choose the "advanced"-> "document processing"-> "batch”.

2. Appear "batch sequence" dialog box, click the "new series" button.

3. In the popup dialog box to enter a name (here input "delete all comments").

4. Appear "edit batch sequence" dialog box, click the "choose command" button, the emergence of the "edit sequences" dialog box, pull the scroll bar to the most below, choose "delete all comments" and click on the right side of the "add" button.

OK, this time the prophase work has been done, that is to say you have for Adobe Acrobat established a batch(pdf related: pdf creator mac), the following can just created by the batch executive delete annotation of operation.

5. In "batch sequence" dialog box, select the "delete all comments", and click "operation sequence" button. Click "ok" on the popup dialog.

6. Select PDF document that need delete annotation. At this time, open your PDF document（pdf related: pdf converter mac）, all comments have been removed.