Watermark PDF
Stamp a text watermark like CONFIDENTIAL or DRAFT on your PDF. Set size, opacity, angle, color and position with a live preview. Free and fully private.
- No upload — 100% private
- Instant, on your device
- Free, no sign-up
- Works offline once loaded
How it works
How to use Watermark PDF
Drop your PDF into the box.
Type your watermark text and adjust size, opacity, rotation and color.
Choose a position — center, diagonal or tiled — and which pages to stamp.
Check the live preview, then click Apply and download.
Why use it
Why use our Watermark PDF tool
Live preview
See the real result on your first page as you change any setting.
Three layouts
A single centered stamp, a page-wide diagonal, or a tiled pattern that's hard to crop out.
Full styling control
Font size, opacity, rotation and color — subtle or bold, it's up to you.
Choose the pages
Watermark every page or only specific pages and ranges.
Works on rotated pages
Watermarks stay upright and centered even on landscape or rotated pages.
Confidential stays confidential
Your document is processed on your device and never uploaded.
FAQ
Frequently asked questions
Can the watermark be removed?
The watermark is added as real text on top of each page, so it prints and appears in every viewer. Someone with PDF editing software could still remove it — for stronger protection use the tiled layout, which covers the whole page.
Which characters can I use in the watermark?
Letters, numbers and punctuation from Western European languages are supported by the built-in PDF fonts. Other scripts, such as Chinese or Arabic, aren't supported yet.
What opacity works best?
Around 15–30% keeps the page readable while making the watermark obvious. Use higher values for “DRAFT” stamps that must stand out.
Can I watermark only some pages?
Yes. Choose “Custom pages” and enter page numbers or ranges, for example 1, 3-5.
Is the preview exactly what I'll get?
Yes. The preview is made by applying the watermark to a page with the same code used for the final file, then rendering it.
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