With stamps you mark a document with a visible status – for example as reviewed or approved. Open the PDF in the viewer and click Stamp in the toolbar.
Available stamps
The available stamps include: Approve, Reject, Workflow as well as Approved, Rejected and Reviewed.
How to do it
Choose the stamp you need and place it on the document with a click. Then click Save at the top so the stamp is kept. Other annotations (pen, text) are described in Annotating PDFs.