Add a watermark to your PDF — simply
Stamp any PDF with a custom text watermark on every page. Mark documents as CONFIDENTIAL, DRAFT, or add your brand. Free, instant, no account required.
PdfDocShift › Watermark PDF
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Mark your documents as confidential
Add a custom text watermark to every page of your PDF in seconds. PdfDocShift stamps the watermark diagonally across each page using Ghostscript — clearly visible but not blocking the underlying content. Ideal for marking drafts, confidential documents, or branding shared PDFs.
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Watermark PDF questions
Everything you need to know about using Watermark PDF online for free.
You can use any text — common examples include CONFIDENTIAL, DRAFT, COPY, DO NOT DISTRIBUTE, or your company name. Keep it concise for best visual results.
Yes. The watermark is applied diagonally across every page of the PDF in a semi-transparent style for readability.
The watermark is embedded into the PDF content. While advanced PDF editors may be able to remove it, it is not easily removed by standard tools and deters casual copying.
Adding a text watermark adds very little to the file size — typically less than 5%. The overall quality and content of your PDF is not affected.