Watermark
Add overlay text to every page of your PDF.
How to add a watermark to a PDF online
Upload the PDF you want to watermark
Drag your file or click to select it from your computer.
Write the text and adjust the style
Enter the watermark text (for example, "Confidential" or your company name) and choose your preferred opacity and font size.
Apply the watermark and download
The watermark is automatically added to every page of the document. Download the resulting PDF — the process is 100% private, with your file never uploaded to any server.
Why add a watermark in PDFDocks?
Adding a watermark to a document is usually done precisely because that document is sensitive: a draft that shouldn't circulate as final, a contract marked as confidential, a business proposal. It's somewhat contradictory, then, that most online tools ask you to upload that same document to an external server to do it. In PDFDocks, the watermark is added with JavaScript, directly in your browser: the PDF never leaves your device. The text is automatically overlaid on all pages of the document with the size and opacity you choose, and you can see the result before downloading anything. Since it doesn't rely on a shared server, there's also no artificial limit on the number of pages in your document.
Is it safe to add a watermark online with PDFDocks?
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Yes. Your file is never uploaded to a server: the watermark is added directly in your browser with JavaScript, so the PDF never leaves your computer at any time.
Can I watermark specific pages?
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Yes. You can write any text you want (for example "Confidential" or your company name) and adjust the opacity and font size to your preference before applying it.
Is my PDF uploaded to a server when using this tool?
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No. The entire process happens in your own browser, with the file never traveling over the internet at any point.
Is my document private during watermarking?
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Yes, no installation required. It works directly from your browser, on desktop or mobile, without creating an account or downloading any additional software.
Is the watermark applied to all pages automatically?
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Yes, it applies to all pages of the document automatically, without you having to repeat the process page by page.
Is there a page limit for adding a watermark?
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We haven't set any artificial limits. Since the process happens in your own browser, you can watermark documents of any size — the only real limit is the memory available on your device.
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