Watermark PDF Online
Add watermark to PDF or mark confidential PDFs in your browser.
Drop files here or click to upload
Max 100 MB
Watermark PDF files online by adding a text or image watermark locally in your browser for confidential drafts or ownership marking.
Last reviewed: June 2026
How to use this tool
- 1Choose the PDF you want to watermark.
- 2Enter watermark text such as Confidential or choose an image and adjust the settings.
- 3Preview the placement options before processing.
- 4Download the watermarked PDF.
Common use cases
- Mark draft documents before review.
- Watermark PDF confidential online before internal sharing.
- Place a simple ownership mark on document copies.
Technical notes
- Watermarks are added to PDF pages during local processing.
- Opacity, placement, and repetition settings affect readability.
- Image watermarks can increase the final file size.
Private by design
This tool runs in your browser. Your file is not uploaded to our server while using the tool.
Limitations
- A watermark is not a security control and may be removable.
- This tool does not certify authorship or legal ownership.
- Review readability before sending watermarked documents.
Frequently Asked Questions
Can I add text and image watermarks?
Yes. Add watermark to PDF with text or an image, then download the watermarked copy.
Can I repeat a watermark across the page?
Yes. Use the tiled or repeat option when you want the watermark across the page.
Can I watermark PDF confidential online?
Yes. You can apply a confidential watermark PDF label locally in the browser.
Will a watermark change file size?
Image watermarks can increase file size, especially on multi-page PDFs.
Are my files uploaded?
No. Watermarks are applied locally in your browser.