PDF Tools • Sep 24, 2026 • 3 min read
How to Sign a PDF and Add a Watermark Without Printing
Printing, signing and scanning a document wastes time. You can add a signature or watermark digitally and send the file straight away.
Signing a PDF
- Open the PDF Signature & Watermark tool.
- Upload your PDF.
- Draw your signature with a mouse or touchscreen, or upload a signature image.
- Choose the page and position it.
- Download the signed PDF.
Tips for a clean signature
- Sign in black or dark blue ink color on a plain background.
- A PNG with a transparent background looks most natural.
- Size it to match nearby text.
Why add a watermark?
A watermark such as Confidential, Draft or your company name marks ownership and discourages misuse of shared documents.
A note on legal use
An image of your signature is fine for many everyday documents, but some contracts require certified digital signatures. Check the rules for your situation.
Ready to try it?
Use the free PDF Signature & Watermark. No sign-up, and your files stay in your browser.
Frequently asked questions
Does the signature look real?
It is an image placed on the page, so a clean upload or careful drawing looks natural.
Is my PDF uploaded?
No. Everything runs in your browser.
Can I sign specific pages?
Yes, you can choose the page for your signature.