Watermark

A watermark is text or an image laid over the pages of a PDF, usually faint and repeated, to mark the document's status or ownership. Think of stamps like DRAFT, CONFIDENTIAL, a company logo, or a copyright notice sitting behind or above the content.

Watermarks do a few practical jobs at once. They signal that a file is not final, deter casual copying or unauthorized sharing, and brand a document so its source is obvious at a glance. A faded logo across every page makes it clear who owns the material even if the file gets passed around.

You can tune how a watermark behaves: its opacity, angle, position, and whether it sits under the text or on top. A subtle diagonal stamp gets the message across without making the underlying content hard to read.