Add Watermark
Stamp customized text or image watermarks across your PDF with controllable opacity.
Drop your PDF file here
or browse files from your computer or phone
How to use Add Watermark
Upload your PDF into the browser workspace.
Type your custom watermark text or choose a preset like CONFIDENTIAL or DRAFT.
Adjust opacity, font size, and rotation angle using the live controls.
Click 'Apply Watermark' and download your secured PDF.
Frequently Asked Questions
What presets are available for quick watermarking?
Quick presets include 'CONFIDENTIAL', 'DRAFT', 'SAMPLE', 'INTERNAL USE', and 'APPROVED'.
Can I adjust watermark transparency?
Yes. You can customize opacity between 5% and 100% so the underlying text remains fully readable.
Does the watermark appear on every page?
Yes. The watermark is centered and stamped uniformly across every page in the document.
Can the watermark be easily erased by viewers?
The watermark is written directly into the PDF content stream. To make it permanent, you can also use our 'Flatten PDF' tool.
Are my confidential files uploaded to any server?
Never. Watermark stamping is executed 100% locally on your computer or phone.
More Free Browser PDF Tools
Every tool runs 100% locally in your browser memory with zero server uploads.