# PDF Watermark

Stamp a text watermark such as DRAFT, CONFIDENTIAL or your company name across the pages of a PDF. Choose the font size, color, opacity and rotation, place it in the center, in a corner or along an edge, or tile it across the whole page, and limit it to selected pages. The text is drawn into the page content as real vector text, so it prints sharply. Useful for drafts, proofs and shared documents.

## Frequently asked questions

### How is the watermark added to the PDF?

The text is written into the content of each selected page as vector text in Helvetica Bold, on top of the existing content and with the opacity you choose. The original page content is wrapped first, so its graphics settings cannot distort the watermark. Nothing is rasterized, so text and page stay sharp at any zoom.

### Which positions can I choose?

Center, the four corners, the middle of each edge, or Tile, which repeats the text in a staggered grid across the whole page. Single placements keep a margin of 24 points from the page edge. Tiling draws at most 400 copies per page and spreads them out when the text is small.

### What happens when the watermark is too large for the page?

For a single placement the tool lowers the font size until the rotated text fits inside the page with its margin, so it is never cut off. A tiled watermark keeps the size you chose and runs off the page edges like a pattern.

### How do rotation and opacity work?

Rotation is an angle from -180 to 180 degrees, counterclockwise, with 45 degrees as the default diagonal. Opacity runs from 1 to 100 percent, and the default of 30 percent keeps the text underneath readable. Both apply to every copy of the watermark.

### Can I watermark only some pages?

Yes. Enter pages such as 1-3,5,8- in the pages field, where 8- means page 8 to the end. Leave the field empty to watermark every page. A page number beyond the end of the document is reported as an error.

### Which characters can the watermark text contain?

Up to 200 characters on one line. Latin text uses the built-in Helvetica Bold font. Greek, Cyrillic and other characters outside that font are drawn with an embedded subset of the Inter font, and characters Inter does not cover either, such as Chinese or Arabic, are refused with a message that lists them.

### Does it work with rotated or cropped pages?

Yes. Positions refer to the page as you see it in a viewer, so the tool takes the page rotation and the crop box into account. A watermark placed at the top stays at the visible top of a page that is stored sideways.

### Can the watermark be removed later?

It is part of the page content, not an annotation, so readers cannot hide or delete it with a click. Someone with a PDF editor can still find and remove the text objects, so a watermark discourages copying rather than preventing it.

### Can I watermark a password protected PDF?

Yes. Enter the password in the password field and the document is opened with it. The watermarked result is saved without password protection, so protect it again if you need to. The password is used only for this request and is not returned.

### What are the limits?

Files up to 10 MiB and 200 pages are accepted, processing stops after 30 seconds, and the result must stay below 32 MiB. Form fields, links and bookmarks in the document are kept.

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