Quick answer. Choose the PDF, pick DRAFT (or type your own text, or choose a logo), set the opacity, angle and position, choose the pages, check the preview and press Download watermarked PDF. The file never leaves your device.
How to add a watermark to a PDF
- Choose the file. The first page appears as a preview.
- Pick text or an image. Use a preset such as DRAFT, CONFIDENTIAL, COPY, SAMPLE, PAID or DO NOT COPY, type your own words, or switch to Image and choose your logo.
- Set the look. Opacity controls how see-through it is, rotation sets the angle, and position puts it in the centre, a corner, or tiled across the whole page.
- Choose the pages. Leave the box empty for every page, or type a range like
1-3, 5. - Check the preview, then download. The preview is built in exactly the same way as the download, so what you see is what you get. The new file is called watermarked-yourfile.pdf.
Text or image, and where to put it
Status words suit drafts, quotes, proofs and wholesale catalogues: a large grey DRAFT at 45° and about 20 to 30% opacity is the classic look, and it keeps the page readable. For price lists you send to many buyers, Tile across the page repeats the word so it is harder to crop out.
A logo works best as a PNG with a transparent background. Put it in a corner at full opacity for a branded look, or large in the centre at low opacity as a background mark. The image keeps its shape; only the width you choose changes.
The standard PDF fonts used here cover English and most Western European letters. For text in Urdu, Arabic, Chinese or emoji, make an image of the text and use Image mode.
Keep your original file. A watermark is drawn into the page, so it is not a comment that can simply be switched off, but no watermark is guaranteed to be impossible to remove. This page only adds watermarks; it has no remover.
Privacy
The PDF and your logo are processed by code running in this browser tab, using the open-source pdf-lib and pdf.js libraries hosted on this site. Nothing is uploaded, and DailyToolLab adds no stamp or branding of its own to your file. Microsoft Clarity session recording is switched off on this page, and the analytics event only notes the type and position of the watermark and how many pages it covered.
Password-protected PDFs and signed files
A PDF that needs a password cannot be stamped here. If you know the password, remove it first with Unlock PDF. If the PDF has a certificate-based digital signature, the watermarked copy is a new file and that signature will not validate on it; the tool warns you when it spots one. To sign rather than stamp, use Sign PDF.
Frequently asked questions
Is this watermark PDF tool free?
Yes. There is no account, no DailyToolLab stamp on your download and no limit.
Is my PDF uploaded?
No. The stamp is added in this browser tab. The PDF and your logo never leave your device.
Can I use a logo as well as text?
Yes. Switch to Image and choose a PNG or JPG. A PNG with a transparent background usually looks best.
Can I watermark only some pages?
Yes. Enter a range such as 1-3, 5, or leave the box empty to stamp every page.
Can I remove a watermark with this tool?
No. This page only adds a stamp. Keep your original file if you need a clean copy.
Is the watermark impossible to remove?
No watermark is guaranteed to be permanent. This one is drawn into the page, so it is not a comment you can simply switch off, but someone with editing software may still be able to remove it. Keep your original.
What if the PDF is password-protected?
If you know the password, remove it first with Unlock PDF, then open the unlocked copy here.