Add PDF Watermark
Stamp a text watermark on every page of a PDF.
Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint. TOOLGRID measures tool usage, not the content you enter.
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Browser-basedWhat this tool does
Select one PDF, enter a text watermark with color, position, opacity, and font size controls, then download the marked file locally.
Processing runs in the current browser tab, so the practical limit is your device memory and browser support rather than a server quota.
What you can do with this tool
Add a CONFIDENTIAL or DRAFT watermark to documents before sharing for review to prevent premature use.
Add a company name, client label, or review status text watermark to reports and proposals before sending them onward.
Watermark portfolio samples or preview documents to discourage unauthorized use.
What to check before relying on the result
- Performance and maximum practical input size depend on browser memory, device speed, and the structure of the input.
- Review the generated result before replacing or publishing an original file.
How to use
- 1
Add the single PDF file you want to watermark.
- 2
Enter the watermark text, then choose color, position, opacity, and font size.
- 3
Run Add Watermark, then open the downloaded PDF locally to verify placement and readability.
Use Cases
Add a CONFIDENTIAL or DRAFT watermark to documents before sharing for review to prevent premature use.
Add a company name, client label, or review status text watermark to reports and proposals before sending them onward.
Watermark portfolio samples or preview documents to discourage unauthorized use.
Stamp ARCHIVE or SUPERSEDED on older document versions to prevent confusion with current versions.
Tips & Tricks
Diagonal watermarks (45°) overlap more content and are more resistant to simple cropping or removal attempts.
A 20–35% opacity watermark is visible without obscuring the document content underneath.
FAQ
Can the watermark be removed by recipients?
Text watermarks added by this tool are embedded in the PDF content stream, making them difficult but not impossible to remove with specialized tools.
Are my files processed locally?
Watermarking happens in your browser. Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint.
Can I watermark every page?
Yes. The watermark is applied to all pages by default.
What font does the watermark use?
Helvetica (the standard built-in PDF font). No font picker is available in this tool — for custom typography in a watermark, render the watermark text as an image first and stamp it via desktop PDF software.
Useful next steps
Open a nearby browser tool when you need to validate, convert, or reuse the result.