Add a Watermark to Any PDF
Stamp a text label or your logo onto every page - processed locally, with no upload involved.
Mark It as Yours
Stamp your name, brand, or logo across a document before sharing it publicly.
Adjust It Your Way
Move it, resize it, change the opacity, font, or color until it looks right.
Processed Locally
The file never leaves your browser during the whole process.
See It Before You Save
A live preview updates as you tweak the settings, so there's no guesswork.
How to Add One
- Upload your PDF: Click "Select Document" and choose the file.
- Pick a watermark type: Go with plain text, or upload a logo image instead.
- Fine-tune it: Set the position, size, opacity, font, and color until it looks right.
- Save it: Click "Download Protected PDF" to get your watermarked file.
When a Watermark Actually Helps
A few common situations where this comes in handy:
- Protecting your work: Makes it harder for someone to pass off your document as their own.
- Branding: Every copy that gets shared carries your name or logo with it.
- Labeling status: Mark a file clearly as "Draft," "Confidential," or "Sample."
- Adding a disclaimer: Stamp a legal notice across every page automatically instead of doing it by hand.
Common Questions
Is it free?
Yes, no account needed and no fee - and we don't add our own branding to your file either.
Can I use my own logo instead of text?
Yes - switch to logo mode and upload a PNG or JPG to use as the watermark image.
Does the file get uploaded anywhere?
No - the watermarking happens locally using the pdf-lib library, so the file stays on your device throughout.
Can I make the watermark barely visible?
Yes - the opacity slider goes from 10% to 100%, so you can make it subtle or bold depending on what you need.