Add a Text Watermark to a PDF Online for Free
Digitaliiisla's Watermark PDF tool stamps your own text across every page of a PDF — right inside your web browser. Mark a document as CONFIDENTIAL or DRAFT, add your name or a reference, or label a copy before you share it. There is nothing to install and no account. Only the text you type is added; the tool never puts its own branding on your file.
The watermark is applied entirely on your own device, so your PDF never leaves your phone or computer. Nothing is uploaded and nothing is stored.
How to Watermark a PDF
- Add your PDF. Drop it in or tap Select a PDF.
- Type your text. Enter the watermark, such as CONFIDENTIAL or your name.
- Set the look. Choose the opacity, angle, font size and colour.
- Add and download. Press Add watermark, preview the result and save it.
An Honest, Visible Text Watermark
This is a simple, visible text watermark drawn on top of your pages. It is great for labelling and deterring casual reuse, but it is not tamper-proof security or encryption — a determined person could remove it. Adjust the opacity so it is readable without hiding your content, tilt it with the angle, and set the colour and size to suit the document.
Frequently Asked Questions
Is the Watermark PDF tool free?
Yes. Adding a text watermark is completely free, with no sign-up, login or payment.
Whose text is added to my PDF?
Only the text you type. The tool never adds any Digitaliiisla name, logo or branding to your document.
Can I change how the watermark looks?
Yes. You can set the opacity, the angle, the font size and the colour so it looks the way you want.
Does the watermark go on every page?
Yes. The watermark text is placed across every page of the PDF.
Are my files uploaded?
No. The watermark is added in your browser. Your PDF is never uploaded and nothing is stored.