Add Watermark to PDF
Stamp a diagonal text watermark — CONFIDENTIAL, DRAFT, SAMPLE — across every page of a PDF. Adjust size and opacity. Runs entirely in your browser: the file never leaves your device.
Your files never leave your device
Frequently asked questions
How do I add a watermark to a PDF?
Upload the PDF, type the watermark text, pick the size and opacity, and download the stamped file. All processing happens in your browser.
Is my document uploaded anywhere?
No — the watermark is applied locally in your browser. The file never leaves your device.
Can I watermark only some pages?
Currently the mark is applied to every page — a common requirement for confidential drafts. Split the PDF first if you need partial watermarking.