Watermark PDF online - free, private, no signup
Add a text watermark such as CONFIDENTIAL or DRAFT to your PDF. Control the opacity, font size and rotation, place it once in the center or tile it across the page, and mark every page or only the ones you choose. It runs in your browser, so your document is never uploaded.
or drop them here
Your files never leave your device.
How to watermark pdf
Add your PDF. Drop one PDF onto the tool or click to choose it from your device. The page count appears once it is read.
Design the watermark. Type your text, then set the opacity, font size and rotation. Choose the center of each page or tiled, and all pages or a range like 1-3,5.
Add the watermark and download. Click Add watermark. The marked PDF is created on your device and downloads straight away.
Why Toolbyte
- Private: your PDF is processed in your browser and never uploaded.
- Free with no signup, no Toolbyte logo on your file and no daily limit.
- Full control over opacity, size, rotation and placement.
- Mark all pages or only the page ranges you list.
- Works on phones, tablets and desktops in any modern browser.
Frequently asked questions
How do I add a watermark to a PDF?
Add your PDF, type the watermark text, adjust opacity, size and rotation, then click Add watermark. The watermarked PDF downloads to your device.
Can I watermark only some pages?
Yes. Choose Only some pages and type the pages, for example 1-3,5. Pages you leave out stay unchanged.
How do I make a diagonal watermark?
Diagonal at 45 degrees is the default rotation. You can also pick horizontal, vertical or diagonal down from the Rotation menu.
Can I repeat the watermark across the whole page?
Yes. Set Position to Tiled across the page and the text repeats in a staggered pattern that covers each page.
Can I use an image or logo as a watermark?
Not yet. This tool adds text watermarks only, and text must use Latin letters, numbers and common punctuation.
Is it safe to watermark my PDF here?
Yes, because your file never leaves your device. Toolbyte adds the watermark inside your browser, so nothing is uploaded and we cannot see your document.