Add Watermark to PDF
Stamp a semi-transparent text watermark across every page of a PDF.
How to use the Add Watermark to PDF
Step 1 — Enter the text
- Type your watermark, such as CONFIDENTIAL, DRAFT, or your company name.
Step 2 — Style it
- Choose colour, size, and angle (flat, diagonal, or vertical).
- Set opacity so it is visible but does not hide the content.
Step 3 — Upload and apply
- Drag your PDF in and press Process.
- The watermark is stamped on every page on the server, losslessly.
Step 4 — Download
- Download the watermarked PDF.
- Files are deleted within an hour.
Frequently asked questions
No. The watermark is semi-transparent and sits on top, so the content underneath stays readable. You control the opacity.
Yes. The watermark is added as a layer over the original pages, which are kept losslessly, so the document text remains selectable and searchable.
Yes. Choose flat, diagonal, or vertical, pick gray, red, or blue, and set the size and opacity to suit your document.
Yes, the same watermark is stamped on all pages in one pass.
No. Remove the password first, as encrypted pages cannot be edited.
About the Add Watermark tool
This tool stamps a semi-transparent text watermark across every page of a PDF — DRAFT, CONFIDENTIAL, a company name, or any label you need. A watermark marks ownership, signals status, or discourages unauthorised use, while leaving the document fully readable underneath.
How the watermark is applied
The text is drawn as a translucent layer on top of each page, at the colour, size, angle, and opacity you choose. Because it is an overlay rather than a rebuild, the original pages are preserved exactly: text stays selectable and searchable, and graphics stay sharp. Nothing is rasterised or flattened. The transparency means the watermark is clearly visible but does not obscure the content beneath it.
Choosing the look
The angle sets the feel: a diagonal watermark across the page is the classic, hardest-to-remove placement and reads as a clear status mark, while a flat or vertical watermark is more subtle. Opacity is the key control — high enough to be unmistakable, low enough that the document remains comfortable to read; around a third opacity suits most documents. Size and colour let you match the watermark to the document, with a muted gray for a discreet mark or red for a strong warning such as CONFIDENTIAL.
When to use it
Watermarks are useful for circulating drafts that should not be mistaken for final versions, marking sensitive documents as confidential before sharing, branding handouts and proposals with a company name, and discouraging the reuse of proofs or samples. Because the watermark is applied to every page in one pass, even long documents are marked consistently.
Privacy and limits
PDFs up to 50 MB are accepted, and password-protected files must be unlocked first. Your file is uploaded securely, watermarked on the server, and offered for download, then deleted within an hour. To add page numbers instead, use Add Page Numbers; to combine documents first, use Merge PDF.