Before you share a draft contract, a price list, or an unpublished manuscript, you want your mark on it. ThePDFBuddy’s free watermark tool stamps your own text — “CONFIDENTIAL,” “DRAFT,” your company name, anything you type — across every page of a PDF, right in your browser.
You control the look: set the text size and choose a light, medium, or strong opacity, from a subtle background stamp to a bold overlay nobody can miss. The watermark is applied to every page in one pass, so even long documents are protected in seconds.
Everything happens locally on your device, which matters most exactly when you are handling the kind of documents worth watermarking. It is free for everyday use, with no account and no extra branding added.
How it works
- Open the Watermark PDF tool.Click the button on this page to jump straight to the watermark tool on ThePDFBuddy.
- Add your PDF file.Drag and drop it in, or tap to browse your device and select it.
- Type your watermark text.Enter any text up to 60 characters, then set the size and choose light, medium, or strong opacity.
- Apply and download.One click stamps every page and gives you the protected PDF instantly.
Takes less than a minute — no account needed.
Why watermark PDFs with ThePDFBuddy
- Your text, your message. Stamp “DRAFT,” “CONFIDENTIAL,” your name, or anything else — up to 60 characters.
- Adjustable size. Scale the watermark text from subtle to impossible-to-miss.
- Three opacity levels. Light for a background hint, medium for everyday use, or strong for maximum deterrence.
- Every page, one pass. The stamp is applied across the whole document at once — no page-by-page work.
- Private by design. Watermarking runs locally in your browser, so sensitive documents are never uploaded. No account needed.
Frequently asked questions
Is adding a watermark free?
Yes. The Watermark PDF tool is completely free, with no account and no extra branding stamped on your file.
Are my documents uploaded anywhere?
No. Watermarking happens entirely in your browser on your own device — your files never leave your computer or phone.
Where does the watermark appear?
Your text is stamped across every page of the document in a single pass, so long PDFs are covered in seconds.
Can I adjust how the watermark looks?
Yes. You can set the text size and choose light, medium, or strong opacity to match how prominent you want the stamp to be.
Can I watermark with a logo image?
The tool applies text watermarks, which cover the most common needs — marking drafts, confidential files, and branded documents with your name or label.