Watermark PDF
Stamp CONFIDENTIAL, DRAFT or your name across every page. Choose the text, size, colour, opacity and angle, then download. Free, private, and nothing leaves your device.
Drop the PDF to watermark
or choose a file from your device. Up to 200 MB. Works on phone, tablet and desktop.
- Any text, on every page
- Size, colour and opacity
- Diagonal or any angle
- Live preview before you save
How to add a watermark to a PDF online
Open your file and the watermark settings appear. Type the text, such as CONFIDENTIAL, DRAFT, COPY or your company name, then set the size, colour, opacity and angle. A preview shows the watermark across the middle of the page you are viewing. Press Apply, and then Download PDF. The watermark is placed in the centre of every page, including rotated ones, and is built into the new file on your own device.
Choosing settings that stay readable
A light grey at about 20 to 30 percent opacity and a 45 degree angle is the classic look: clear enough to notice but it does not hide the words underneath. For a stronger stamp, raise the opacity or pick red. If your text is long, reduce the size so it fits across the page. Text in other scripts, such as Sinhala, Tamil, Arabic, Hindi or Chinese, is supported and is drawn as a picture so it always looks right.
What a watermark can and cannot do
A watermark is a visible mark. It tells readers the status of a document and discourages casual reuse. It is part of the page, so a determined person could cover or edit it out, and it is not a security feature. To control who can open or copy the file, use the Lock PDF tool as well.
Tips
- Finish editing the document first, then add the watermark last.
- Check a portrait and a landscape page in the preview to be sure the text fits.
- Use the same wording across versions, such as DRAFT v2, so readers know which file is current.
- The saved file is named with -watermarked added, so the original stays unchanged.
Privacy
Your PDF is opened, changed and saved entirely inside your browser. It is not uploaded, stored or shared, and nothing is kept once you close the page. You can confirm this in your browser network tab while you work.
Frequently asked questions
Is my PDF uploaded when I add a watermark?
No. The watermark is added and the new file is built inside your browser. Nothing is sent to a server.
Can I use an image or logo as a watermark?
This tool adds text. To place a logo, use the full PDF Editor, where you can add an image to a page, page by page.
Does the watermark go on every page?
Yes. It is centred on every page of the downloaded file, including landscape and rotated pages.
Can I change the colour, size and angle?
Yes. You can set the text, size, colour, opacity from 5 to 100 percent, and any angle.
Can the watermark be removed afterwards?
It becomes part of the page, so it cannot be moved or switched off in a viewer. It is not tamper-proof, and a skilled person could edit it out, so do not treat it as security.
Can I watermark a password-protected PDF?
Not here. Files with an open password or editing restrictions cannot be rewritten. Save an unprotected copy first if you have the password.
Related PDF tools
PDF Editor Sign PDF Rotate PDF Delete PDF Pages Add Page Numbers Lock PDF PDF Merger PDF Splitter PDF Compressor All converters