Watermark PDF
Add custom text watermarks to your PDF pages. Choose font size, opacity, rotation, and color — 100% in your browser.
Add text watermarks to every page of your PDF. Commonly used to mark documents as "DRAFT", "CONFIDENTIAL", "SAMPLE", or with your company name to protect intellectual property and establish ownership.
Customize the watermark text, font size, opacity, rotation angle, and color. The watermark is embedded directly into the PDF pages. You can preview the result before downloading. Processing happens locally in your browser for complete privacy.
Drop your PDF file here to watermark
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Frequently Asked Questions
How to Add a Watermark to PDF Pages
Watermarking adds a visible text overlay to every page — perfect for marking documents as "DRAFT", "CONFIDENTIAL", "SAMPLE", or stamping your company name. Customise the text, size, colour, opacity, and rotation angle to fit any document.
- Upload your PDF file.
- Type your watermark text (e.g., "CONFIDENTIAL" or "DRAFT").
- Customise the appearance: font size, colour, opacity, and rotation.
- Click "Add Watermark" and download the watermarked PDF.
Watermarks are rendered as semi-transparent text on top of each page. They are clearly visible when viewing or printing but do not obscure the underlying content, which is why they are standard practice for drafts, proofs, and controlled documents.
Common watermarks and when to use them - DRAFT or NOT FINAL on documents circulating for review. - CONFIDENTIAL or INTERNAL on sensitive material shared with a limited audience. - SAMPLE or SPECIMEN on template and preview copies. - A company or author name to brand proposals, reports, and proofs sent to clients.
Getting the look right Lower the opacity for a subtle background stamp or raise it for a bold, unmissable mark. A 45° rotation across the page is the classic diagonal watermark, while 0° keeps it horizontal. Adjust the font size so the text spans the page without covering key content, then preview before downloading.
Processed on your device The watermark is applied inside your browser with pdf-lib, so your document is never uploaded. Note that the watermark becomes part of the page and cannot be toggled off later — keep a copy of the original if you will need an unmarked version.
Frequently Asked Questions
Can I remove a watermark after adding it?
The watermark is permanently embedded in the output PDF. Keep a copy of the original file before watermarking if you may need an unmarked version.
Can I use an image or logo as a watermark?
Currently only text watermarks are supported. You can set the text, colour, size, opacity, and rotation.
Will the watermark appear when printing?
Yes. The watermark is rendered into the PDF itself, so it is visible in both digital and printed copies.
Can I make the watermark faint or bold?
Yes. Use the opacity control for a light background stamp or a strong, prominent mark, and adjust the font size and rotation to taste.
Is my document uploaded to add a watermark?
No. The watermark is applied locally in your browser, so the file never leaves your device.