How to Add a Watermark to a PDF
Last updated · By the PDFSolution team
A watermark answers one question for anybody who picks the document up: what is this copy? DRAFT stops an unfinished quote being treated as final. CONFIDENTIAL sets expectations before the first paragraph is read. A name across a sample makes casual reuse obvious.
What a watermark does not do is protect the content. It is ink on the page, not a security control — anyone determined enough can work around it. Use it to communicate, and use passwords or redaction when the requirement is actually protection.
Ready to do it now? Open the tool this guide describes.
Add a watermarkStep by step
- 1
Open Add Watermark and choose the file
The stamp is drawn in your browser and the document is not uploaded.
- 2
Enter the text
Short and unambiguous works best: DRAFT, CONFIDENTIAL, SAMPLE, or a company name.
- 3
Adjust opacity, size and angle
A diagonal mark at low opacity stays legible without making the underlying text hard to read. Aim for visible but not obstructive.
- 4
Apply and download
The watermark is merged into every selected page and travels with the file.
Useful tips
- Around 20-30% opacity is usually the sweet spot; heavier marks make documents genuinely hard to read.
- Watermark the final assembled bundle so no page is missed.
- If the point is to stop editing or printing rather than to label a copy, set permissions with Protect PDF instead.
Common problems
- The watermark hides the text
- Reduce opacity or font size, or move it away from the centre of the page.
- It disappeared on some pages
- Pages of a different size or orientation can push the stamp outside the visible area. Apply again with a smaller size.
- I need to remove one
- A merged watermark is part of the page. There is no clean removal — go back to the original document.
Frequently asked questions
- Does a watermark stop copying?
- No. It labels a document; it does not restrict what anyone can do with it.
- Can I use an image or logo?
- The watermark tool stamps text. To place a logo, use Add Image in the editor.
- Is my file uploaded?
- No, watermarking runs in your browser.
- Can I watermark only some pages?
- Yes, restrict the range before applying.
- Will it print?
- Yes, it becomes part of the page content.
Related guides
- How to Edit a PDFPDFs were designed to be final. Here is what can realistically be edited, and the fastest route for each kind of change.
- How to Password-Protect a PDFEncrypt a document before you send it — and avoid the mistakes that make the password pointless.
- How to Add Page Numbers to a PDFNumbering a merged bundle so people can actually refer to a page in a meeting.