How to Add a Watermark to a PDF (CONFIDENTIAL, DRAFT, or Custom Text)

When a watermark actually protects a document, when it doesn't, and how to add one to every page in seconds.

A watermark won't stop someone determined to misuse a document, but it does two things well: it makes the document's status obvious at a glance (draft vs. final), and it discourages casual redistribution by making clear where a copy came from.

What a watermark is actually good for

Marking draft status: stamping "DRAFT" across a document in progress prevents it from being mistaken for the final version if it's shared before it's ready.
Marking sensitivity: a "CONFIDENTIAL" watermark is a visual reminder not to forward a document further, even though it's not real access control.
Attribution: a company name or logo watermark makes it obvious where a document originated if a printed copy ends up out of context.

How to add a watermark

Open the Watermark PDF tool.
Upload your PDF and type the watermark text you want (or use a preset like "CONFIDENTIAL" or "DRAFT").
Adjust opacity and position so it's visible but doesn't obscure the content underneath.
Download the watermarked file — every page gets the same stamp automatically.

What a watermark doesn't do

It doesn't encrypt anything, and it doesn't stop someone from copying the text or cropping the image out in an editor. If you need actual access control — preventing a document from being opened, printed, or edited without a password — that's a different job; see the Protect PDF tool instead. Use a watermark for visibility, and password protection for enforcement.