Add Watermark
Stamp text or images onto your PDF pages.
Drag & drop your file here
or click to browse
pdf, pdf · Max 100 MB
Privacy: Your files are processed entirely in your browser and are never uploaded to any server. All data is automatically cleared after processing.
How it works
Upload
Drop your file into the upload area above.
Process
Add Watermark runs instantly in your browser — no waiting for server processing.
Download
Download your Watermarked PDF. Your files are then automatically deleted from memory.
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About Add Watermark
Add Watermark stamps custom text or images across your PDF pages to protect ownership. Control text, font size, opacity, rotation, and color with a live preview. The watermark is applied to every page — privately in your browser.
Why use Add Watermark?
- Custom text and image watermarks.
- Live preview before applying.
- Control opacity, rotation, and color.
- No upload — private and secure.
- Free with no watermark added beyond yours.
When to use Add Watermark
Frequently Asked Questions
Is my PDF uploaded to a server?
No. Add Watermark runs entirely in your browser using pdf-lib. Your PDF is stamped locally and never leaves your device.
Can I customize how the watermark looks?
Yes. You control the text, font size, opacity, rotation, and color. A live preview shows how the watermark will appear before you apply it.
Is the watermark applied to every page?
Yes. The watermark is stamped diagonally across the center of every page in the PDF.