Watermark PDF writes a text stamp across the pages of your document – “DRAFT” on a contract under review, “CONFIDENTIAL” on internal papers, “COPY” on a certificate or your name on a portfolio. Set the font size, colour, transparency and angle, then place it once in the centre or repeat it in a tiled pattern that is hard to crop out.
A live preview on page 1 updates as you change the settings. The watermark is added as real text (or as a sharp image for non-Latin scripts), so it prints cleanly. All processing happens in your browser; the PDF is never sent to a server.
How to use the Watermark PDF tool
- Choose or drop the PDF you want to watermark.
- Type the watermark text and choose Centre or Tiled.
- Adjust size, opacity, rotation and colour while watching the preview.
- Optionally limit it to some pages, then click Add watermark.
Why use ToolOrca Watermark PDF
- Centred or tiled watermark
- Any angle from −90° to 90°
- Adjustable opacity and colour
- Live preview on page 1
- Works with any language
- Private – no upload
Choosing a good watermark
A diagonal watermark at 45° with 15–30% opacity is easy to see but still lets readers read the page underneath. Red or grey is the classic colour for status stamps such as DRAFT or VOID. A tiled pattern with smaller text is better for deterring copying, because it cannot be removed by cropping one area.
Keep in mind that a watermark is a deterrent, not real protection: anyone with a PDF editor can try to remove it. For sensitive material, share only what is needed – extract the relevant pages first.
Frequently asked questions
How do I add a CONFIDENTIAL watermark to a PDF?
Load your PDF, keep the default text “CONFIDENTIAL” (or type your own), adjust the look and click Add watermark.
Can I add the watermark to only some pages?
Yes. Type page numbers or ranges in the Pages box, for example 1, 3-5.
Can I add an image or logo as a watermark?
This tool adds text watermarks. To place a logo or stamp image, use Sign PDF and upload the image as the “signature”.
Does it work with Chinese, Arabic or other scripts?
Yes. Text that the built-in PDF font cannot show is drawn as a high-resolution transparent image, so any language works.