How to add a watermark to a PDF
- Upload one or more PDFs.
- Type your text and choose direction, color and opacity.
- Click Add watermark and download the PDF.
A watermark makes a document's status obvious and discourages reuse. It is especially useful when you send a copy of your ID card, passport or bank statement: write something like “Copy for loan application only – Bank X” so it cannot be used for anything else.
Businesses also use it to mark a quote as “DRAFT”, an internal file as “CONFIDENTIAL” or a sample as “SPECIMEN”. Choose diagonal or horizontal text in gray, red or blue and set the opacity — around 20 to 30% keeps the content easy to read underneath.
The watermark is added to every page without touching the existing content. You can process up to 50 files at once, up to 300 MB each. Files are deleted after 30 minutes.
Frequently asked questions
How do I protect a copy of my ID?
Add a watermark stating its purpose, e.g. “Copy for rental application only – 2026”. That makes the copy hard to reuse elsewhere.
Does the watermark hide the text?
No, it is semi-transparent. At 20 to 30% opacity the document stays perfectly readable.
Can I put a logo as a watermark?
This tool adds a text watermark only.
Can I choose the color?
Yes: gray, red or blue, with an opacity from 5 to 100%.
Is it free?
Yes, free, no sign-up, and we don't add any watermark of our own.