Watermark PDF
Stamp a custom text watermark onto every page — free, instant, and private.
About Watermark PDF
Add a text watermark to a PDF directly in your browser without uploading anything to a server. Type any text — like "CONFIDENTIAL", "DRAFT", or your company name — then choose the color, opacity, size, and rotation. Place a single centered watermark across each page or tile it as a repeating pattern for tamper-evident coverage. The entire process runs on your device using pdf-lib, so your files stay completely private, no sign-up is required, and the watermark is baked cleanly into every page — just open, mark, and download.
How to use Watermark PDF
- 1Upload your PDF by clicking the drop zone or dragging your file onto the page.
- 2Type your watermark text and pick a layout — single or tiled.
- 3Adjust the color, opacity, font size, and rotation to taste.
- 4Click "Add Watermark & Download" to save your watermarked PDF instantly — no upload, no sign-up.