1. First, create a PDF document, or a document with a digital signature, and then open it with Acrobat. Then click the tools page on the right.

2. Click "Insert from File" in the pop-up dialog box, and select the PDF document whose digital signature is to be deleted. Click "Open".

3. The Insert Page dialog box will appear. Locate "Last Page" and "After".

4. Click "Page" and "Delete" and select the page to be deleted in the "Delete Page" dialog box.