Watermark PDFs Online
PDFs are shared everywhere — proposals, portfolios, contracts, ebooks. Add a watermark to mark ownership, prevent unauthorized redistribution, and maintain a professional appearance. No PDF editor required.
PDFs are one of the most commonly shared document formats in business and creative industries. Without a watermark, they can be forwarded, downloaded, and redistributed without any trace of the original owner. Watermark.ws lets you upload any PDF, add a text or logo watermark to every page, and download the stamped document — all directly in your browser with no software to install.
Your watermark is applied consistently across every page of the PDF document. Whether your file is 2 pages or 200, every page gets the same professional watermark treatment in a single operation.
Mark proposals as "Confidential," stamp portfolios with your brand, or add "Draft" labels to working documents. PDF watermarking is essential for protecting sensitive business materials before sharing.
Set the opacity low for a subtle background watermark that does not interfere with reading, or make it bold and prominent for maximum visibility. Full control over size, color, position, and transparency.
How It Works — In 3 Simple Steps
Stamp any PDF document directly in your browser.
Upload Your PDF
Drag and drop your PDF into Watermark.ws or select it from your device. Multi-page documents are fully supported — every page gets watermarked.
Design Your Watermark
Type your text — "Confidential," "Draft," your company name — or upload your logo. Adjust size, color, opacity, rotation, and position on the page.
Download Your Stamped PDF
Your watermark is applied to every page automatically. Download the finished PDF and share it knowing your ownership mark travels with the file.
Protect Your Documents Before Sharing
Add a watermark to any PDF in seconds — no software needed.
Frequently Asked Questions
Can I watermark a multi-page PDF?
Yes. Watermark.ws applies your watermark to every page of the PDF document automatically. You do not need to process each page individually — upload the full document and the watermark appears on all pages.
What types of PDF documents can I watermark?
Any standard PDF file can be watermarked, including proposals, contracts, ebooks, portfolios, reports, and marketing materials. If you can open the PDF, Watermark.ws can watermark it.
Will the watermark cover the text in my document?
You control the opacity and position. Many users set the watermark at low opacity (15-30%) and place it diagonally across the page, so it is visible as a background mark but does not interfere with reading the document content.
Can I add both text and a logo watermark to my PDF?
Yes. You can layer multiple watermarks on the same document. For example, add your company logo in the corner and a "Confidential" text stamp across the center of each page.
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What Our Customers Say
Watermark.ws is trusted by thousands of professionals and businesses
There is nothing better than Watermark.ws! It can easily batch process hundreds of files while watermarking, resizing, and re-touching them simultaneously.
Michael Archambault
Apple
We use Watermark for adding credits to photos and videos from news agencies before we share them on Twitter.
Sarah Marshall
The Wall Street Journal
It's super easy to use. You can customize your watermark and even use your own company logo. The customer service is excellent and all of my questions have been answered.
Alice Delore
SaleHoo
Stamp Your PDFs Before You Share Them
Add your watermark to any PDF document in seconds. Protect proposals, portfolios, and confidential files — no PDF editor needed.
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