Add Watermark to PDF. Free & Private.
Upload a PDF, type your watermark text, and download a version with the watermark stamped on every page. Control the position, opacity, color, font size, and angle. You can also upload an image to use as a watermark instead of text. A live preview updates as you make changes. Everything runs in your browser - your files stay on your device.
Drop a PDF here
or click to browse
PDF onlyWas this helpful?
Files stay local
Processed in your browser
Instant
No queue, no wait time
No account
No sign-up, ever
Free
Enabled by ads
How it works
Upload your PDF
Drop a PDF file or click to browse. A preview of the first page loads instantly so you can see exactly how your watermark will look.
Customize the watermark
Type your watermark text and adjust the position, opacity, color, and angle to match your needs. The live preview updates as you type.
Download the watermarked PDF
Click Download and get your watermarked PDF in seconds. No account needed, no files sent to any server.
Frequently asked questions
Yes. You can place the watermark diagonally across the center (the classic look), horizontally centered, or in any corner. The opacity slider lets you make it subtle or bold.
No. The original content is untouched. The watermark is added as a separate text layer on top of the existing pages.
No. All processing happens entirely in your browser. Your PDF never leaves your device.
Yes. The watermark is applied to every page automatically when you click Download.
Watermarks added here are embedded as text in the PDF. They can be removed with PDF editing software, but are sufficient for most casual protection and attribution needs.