Add a Watermark to a PDF
Stamp a text watermark across every page of a PDF.
or drop a PDF here
- Stays on your device
- No sign-up
- No watermark
How to watermark a PDF in 3 steps
- 1
Select PDF file
Click the button or drop the file. It is not uploaded.
- 2
Set your text
It runs in this tab, on your device.
- 3
Download
Save the new file. Your original stays as it was.
Often used next
All 26 tools- Add Page NumbersInsert page numbers into a PDF with custom position and style.
- Protect PDFAdd a password and set permissions to restrict printing, copying or editing.
- Compress PDFShrink a PDF to fit email and upload limits, with a level or target size.
- Merge PDFCombine multiple PDF files into a single document in seconds.
About this tool
Stamp a custom text watermark — like "CONFIDENTIAL", "DRAFT", or your company name — across every page of your PDF, with full control over opacity, size, rotation, and position.
Limits and edge cases
- The watermark is a single item near the center of each page. It does not tile or repeat.
- Text uses the six standard PDF fonts, which cover Western European characters. Cyrillic, Greek, Arabic or Chinese text cannot be encoded and ends in the generic error message.
- Text does not wrap. A long phrase at a large size can run past the page edge, so shorten it or lower the size (10 to 120).
- Every page gets the same mark and settings. Different wording per page needs separate runs.
- A password-protected PDF cannot be opened for stamping. Remove the password first.
- The mark sits above the content as ordinary page content, so an editor may be able to remove it. Treat it as a label, not protection.
Watermark a PDF: picking settings for the job you have
The same controls produce very different results depending on the purpose. These are starting points built from the real ranges in the tool, so adjust them against the preview.
- Draft or confidential label. Keep the default gray, Helvetica Bold, 30% opacity and a 45 degree angle. Short capital words fit the page width at the default size of 48.
- Company logo. Use Image mode with a PNG that has a transparent background, around 20% to 40% width, and drag it into a corner. Lower the rotation to 0 so it sits level.
- Scanned pages or photos. Busy backgrounds hide pale marks, so raise opacity to 50% or more, or choose a dark or red color instead of gray.
- Long phrase. Text never wraps, so cut the size well below 48 or use two runs with shorter wording rather than letting it leave the page.
After stamping, a large file can be shrunk with Compress PDF, and numbering the pages is done with Add Page Numbers. If the document also needs a password, run Protect PDF last, because a protected file cannot be stamped afterwards.
Compared with tools that upload your file
iLovePDF, Smallpdf and PDF24 all offer this kind of job, and the online ones upload your file to their servers to do it. Here the work happens in this tab instead. Read the honest comparisons with iLovePDF, Smallpdf and PDF24, including where they are the better choice, or how to check that a tool does not upload.
Frequently asked questions
Can I use an image or logo as a watermark instead of text?+
Will the watermark appear on every page?+
Why did I get an error when adding my watermark?+
Can I remove a watermark I added by mistake?+
Does the watermark stop people copying or editing my PDF?+
Is my document uploaded when I add a watermark?+
Related guides
Ready to start?
Free, no sign-up, nothing uploaded.