How to Add a Watermark to a PDF
Need to mark a document as a draft, confidential, or sample before sharing it? Serbabisa's Watermark PDF tool stamps your own text across every page, entirely on your device.
OPEN THE TOOLWatermark PDFStep by step
- 1Open the Watermark PDF tool
Choose Watermark PDF from the directory to open the dropzone.
- 2Drop your PDF
Drag the file in or click to browse. Serbabisa reads the page count so you can confirm it's the right document.
- 3Type your watermark text
Enter the text you want stamped on every page, like DRAFT or CONFIDENTIAL, then pick Light, Medium, or Strong opacity.
- 4Add and download
Press Add watermark, then download the PDF with your text stamped across every page.
Frequently asked
Can I use my own custom text?
Yes, type anything you like, it isn't limited to preset words like DRAFT.
Can I make the watermark more or less visible?
Yes, choose Light for a subtle mark, Medium for a balanced look, or Strong for a bold, hard-to-miss stamp.
Is my PDF uploaded anywhere?
No. The watermark is added locally in your browser, so nothing is sent to a server.
Ready to try it?
Do it now, and your file never leaves the tab.