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Watermark PDF

Put a text watermark, your logo or a stamp such as CONFIDENTIAL or PAID on every page or the pages you pick. Set opacity, angle and position and see it before saving. Nothing is uploaded.

Updated by Khokhar Sab

How do I add a watermark to a PDF?

Press Choose a PDF. Pick Text, Stamp or Image, type your words or choose a logo, then set size, color, opacity and angle. Click one of the nine squares to place it, or Repeat across the page. The preview shows the result. Press Add watermark, then Download. Your original file is not changed.

  1. Press Choose a PDF.
  2. Pick Text, Stamp or Image, and set the words or logo.
  3. Adjust Opacity, Angle and Position while watching the preview.
  4. Optionally type Pages, such as 1-3 or odd.
  5. Press Add watermark, then Download.

How do I put a logo watermark on a PDF?

Choose Image, then pick your logo as a PNG or JPG. A PNG with a transparent background looks best, because only the logo shows and the page stays visible around it. Set the width as a share of the page, lower the opacity to about 20 to 30 percent for a faint mark, and pick a position.

Can a watermark be removed from a PDF?

A normal watermark is a separate layer, so someone with a PDF editor can select and delete it. To make that hard, tick Make it hard to remove: every page is turned into a picture with the watermark burned in. The trade-off is real: text can no longer be selected or searched, and files usually get larger.

Does a watermark make the PDF much bigger?

Hardly. The watermark is stored once in the file and each page only points to it. In our build test, a tiled CONFIDENTIAL watermark on all 500 pages of a text PDF added 246 KB, about 504 bytes per page.

Run on 2026-10-16 by the site build with the tool's own code: text PDFs, tiled 60 pt text at 45°.
PagesBeforeAfterAdded per page
1022 KB31 KB918 bytes
100217 KB269 KB529 bytes
5001.1 MB1.3 MB504 bytes

Should the watermark go over or behind the text?

Over the content is the default, with transparency so the page stays readable. It is the only choice that shows on scanned PDFs, because a scan is one solid picture that would hide anything behind it. Behind the text suits PDFs made from documents, where it looks like printed letterhead paper.

Limits and fixes

  • Characters: Latin, Greek and Cyrillic work. Chinese, Japanese, Arabic and emoji are not in the watermark fonts yet.
  • One watermark per run: run the tool again to add a second mark, such as a logo and a stamp.
  • Locked PDFs need their password removed first with Unlock PDF.
  • Removing watermarks made by others is not something this tool does.

Frequently asked questions

Is it free?

Yes, with no sign-up, no daily limit and no extra mark of ours on your file.

Can I watermark only some pages?

Yes. Type pages such as 1-3, 5 or odd in the Pages box. Leave it empty for every page.

Will links and form fields still work?

Yes, unless you choose Make it hard to remove, which turns pages into images.

Is my PDF uploaded?

No. The watermark is added in your browser and the file stays on your device.

What does the opacity setting do?

It sets how see-through the mark is. 100% is solid; 20 to 30% is a faint watermark that does not hide the text.

How this tool was built and tested