PDF Watermark
Add a diagonal text watermark across every page of a PDF.
Your file never leaves this browser tab — everything runs locally on your device.
How to use pdf watermark
- Choose or drag in a PDF file.
- Enter your watermark text, e.g. "CONFIDENTIAL" or "DRAFT".
- Adjust the opacity slider so the watermark is visible but doesn't obscure the content.
- Click "Add Watermark" and download the result.
Common use cases
- Marking draft documents so they aren't mistaken for a final version.
- Labeling confidential or internal-only PDFs before sharing.
- Adding a simple copyright or ownership notice across pages.
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