No — pdf-lib adds the watermark in your browser.

What watermark text can I choose?

Choose from CONFIDENTIAL, DRAFT, DO NOT COPY, SAMPLE, INTERNAL USE ONLY, or COPY.

Is the watermark transparent?

Yes — watermark opacity is set to 35% so the content remains readable.

Does it work on all PDFs?

Yes, including multi-page PDFs.

Free PDF Watermark Online

Convert files instantly — 100% free, no signup, no upload.

No Upload — Files stay on your device

No Signup — No account required

No Charges — 100% free forever

No Watermark — Clean output always

Drop your file here

or click to browse

.pdf · Max 100MB

How It Works

Select

Drop or click to pick your file

Convert

Instant processing in your browser

Download

Save the result to your device

Why EaseToolz?

🔒 Files stay on your device — 100% private

⚡ Instant conversion — no waiting

🆓 Completely free — no hidden fees

📵 No signup — no account needed

🚫 No watermark — clean output every time

📱 Works on any device including mobile

Add a diagonal watermark to all pages of your PDF. Choose from CONFIDENTIAL, DRAFT, DO NOT COPY, SAMPLE, and more. Watermarks help identify sensitive documents and deter unauthorized sharing. Added by pdf-lib in your browser — no server, no upload.