Is add watermark free?

Yes. SagePDF runs in your browser with no signup. Your PDF is not uploaded to our servers.

What does flatten do?

Flatten rasterizes each watermarked page into an image with the watermark burned in. That makes the watermark harder to remove, but text on those pages won’t be selectable and file size can grow.

Can I watermark only some pages?

Yes. Keep “Apply to all pages” on and enter a range like 1-5, 8—or turn it off to watermark only the page you’re previewing.

Are PNG and JPEG both OK for image watermarks?

Yes. PNG is best for logos with transparency; JPEG works for photos.

Add Watermark Secure Online

Use SagePDF to add watermark secure online. Add text or image watermarks to PDF pages. Use SagePDF in your browser—no uploads, no signup, your files stay on your device.

Stamp text or an image over your PDF pages. Customize position, opacity, and rotation—all in your browser.

Drop your PDFs here, or click to choose files

Your files never leave your device. All processing happens in your browser.

How to use

Upload PDF

Select your PDF. Preview loads in the editor—your file never leaves your device.

Choose text or image

Switch between Text and Image. Set opacity, angle, font size or image scale, and drag the watermark on the preview to position it.

Pages & flatten

Use “Apply to all pages” with a range like all or 1-3, 5—or turn off to watermark only the page shown. Optional flatten bakes the page to pixels (larger files).

Download

Click Add watermark, then download your PDF.

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