How to use Add Watermark to PDF
- Add one PDF in the PDF file field.
- Choose Text or PNG image, then set the mark itself.
- Pick the pages to mark, then set opacity, angle, size and position.
- Select Add the watermark and download the -watermarked.pdf file.
Example: Add Watermark to PDF
Mark the last two pages of a three-page PDF.
Options
- Watermark text
- Up to 200 characters in a PDF standard font, covering Latin letters, digits and common accents. Other writing systems need a PNG watermark.
- Opacity
- 0.15 is a light mark that still reads on a printout. 1 is solid and hides what is underneath.
- Size in points
- For text this is the height of the letters. For an image it is the width on the page.
- Repeat across the page
- Draws the mark in a grid instead of once, which is harder to crop out and busier to read. Each page is capped at 48 marks.
Supported inputs and limits
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
How the settings change the mark
Opacity sets how much of the page shows through: 0.02 is a faint tint that a photocopy may lose, and 1 is solid. An angle of 0 reads horizontally, while 45 or -45 crosses the text and is harder to crop out. Size runs from an 8-point footer mark to a 400-point mark that fills most of the page width, and a mark larger than the page is scaled to fit. A corner position keeps the body clear, while the center survives a narrow crop. Tiling draws a grid instead, which is harder to remove and busier to read.
Questions about Add Watermark to PDF
Does a watermark stop people from copying my file?
No. It shows that a copy is a draft, a sample or a duplicate. It cannot prevent printing, copying or editing, so do not use it in place of permissions.
Why was my JPEG or WebP logo refused?
The image watermark embeds PNG only. Save the logo as a PNG, ideally with a transparent background, then select it again.
Why is my watermark text rejected?
The mark uses a standard PDF font, which covers Latin letters, digits and common accents. Text in another writing system is refused instead of printed as blank boxes; use a PNG image for that.
Why is my watermark smaller than the size I set?
A mark larger than the page is scaled down so you never see only a fragment. The result names the pages where that happened.