How to use the Watermark PDF
- Choose a PDF file.
- Type the watermark text and adjust size, opacity and angle.
- Click “Add watermark” and download the result.
When to watermark a PDF
- Marking drafts so they are not mistaken for final versions.
- Labelling confidential documents before sharing.
- Identifying your work in samples or previews.
Tips
An opacity between 15% and 30% keeps the watermark visible without making the page hard to read. A diagonal 45° angle is the most common and hardest to crop out.
Frequently asked questions
Can the watermark be removed?
The watermark is drawn onto each page. Determined users with PDF editing software can sometimes remove it, so watermarks discourage misuse rather than prevent it.
Which characters are supported?
The standard Helvetica font is used, which supports English letters, numbers and common Western European characters.