Add Watermark to PDF Online

How to Add a Watermark to a PDF

1. Drop your PDF onto the tool, or click Choose PDF File.
2. Pick Text or Image. For text, type up to 60 characters (the default is CONFIDENTIAL) and choose the font, style, size and color. For an image, upload your logo or stamp and set its size.
3. Set how it looks. Opacity and rotation are sliders. Layout can be Center, Tiled, or Custom position with a nine-spot grid.
4. Choose the pages. All pages, odd pages, even pages, first page only, or all except the first.
5. Check the live preview and flip through pages with Prev and Next.
6. Click Apply Watermark & Export, then download the file. It is saved with _watermarked added to the name.

Why Use This PDF Watermark Tool

• Your file stays on your device. The PDF and your watermark image are handled by code running in your browser. Nothing is uploaded to a server.
• Your pages stay intact. The watermark is laid on top of each page as a transparent layer, so text stays selectable and searchable and links keep working.
• Text or image. Six fonts (Arial, Georgia, Courier, Times, Impact, Verdana) in four styles, or your own logo as an image.
• Live preview. See the watermark on the actual page before you export, and move between pages to check it.
• Placement that fits the job. One centered mark, a tiled pattern across the page, or any of nine positions.
• Choose which pages. Skip the cover page, or mark only odd or even pages. Pages you leave out are not touched.
• Adjustable strength. Opacity from 3% to 100% and rotation from -90 to 90 degrees.
• Optional flattening. Tick Flatten pages to turn every page into an image. Text can no longer be selected or copied, which makes the watermark much harder to strip out.
• Sharpness setting. Standard, High or Ultra. Higher sharpness draws a crisper watermark and makes the file a little larger.

Good to know: a watermark tells readers who owns the document and discourages copying, but it is not a lock. Someone with a PDF editor could still delete it. Flatten pages makes that much harder, but nothing stops a screenshot, so keep your original file and do not rely on a watermark alone for sensitive documents.

FAQ

How do I add a watermark to a PDF?

Drop your PDF onto the tool, choose a text or image watermark, adjust opacity, rotation and position in the live preview, then click Apply Watermark and Export.

Can I watermark only some pages?

Yes. Choose all pages, odd pages only, even pages only, the first page only, or all pages except the first. Pages you skip stay exactly as they were.

Can I use my logo as a watermark?

Yes. Switch to the Image tab and upload an image file. A PNG with a transparent background usually looks best. You can set its size, opacity, rotation and position.

Will the text in my PDF still be selectable after watermarking?

Yes, by default. The watermark is added on top of the original page, so the text can still be selected, searched and copied, and links keep working. If you tick Flatten pages, every page becomes an image and the text can no longer be selected.

Is my PDF uploaded anywhere, and is there a size limit?

No, the PDF stays on your device while it is processed in your browser. Each PDF can be as large as your plan allows; the limit is shown on this page.

Can the watermark be removed afterwards?

It is saved into the PDF, so a casual reader cannot switch it off, but someone with a PDF editor could delete it. Tick Flatten pages to merge it into a page image, which is much harder to undo. Keep your original file if you may need a clean copy later.