Watermark PDF
Stamp any text (like "CONFIDENTIAL" or your company name) across every page of a PDF, with control over opacity, angle, and size — applied uniformly across the whole document.
Watermark PDF tool
100% Privacy
Files stay strictly on your device. Zero server uploads.
Instant Speed
Local browser WebAssembly & JS processing engine.
Free Forever
Unlimited usage with no hidden fees or watermarks.
How to Watermark a PDF
Upload PDF
Upload the PDF to watermark.
Enter Text
Type the watermark text.
Customize
Set font size, opacity, and rotation angle.
Download
Download your watermarked PDF.
Add custom text or image watermarks to PDF files online for free. Control opacity, position, rotation, and color. Browser-based, instant download.
Introduction
Protect and brand your PDF documents with custom watermarks. Add any text (like "CONFIDENTIAL" or your company name) or an image logo, control the opacity and angle, and apply it uniformly across all pages in seconds.
Features
- Text watermarks
- Image watermarks
- Control opacity
- Custom rotation angle
- Font size and color
- Apply to all or select pages
- No server upload
- Free and unlimited
Benefits
- Fast, client‑side processing
- No data leaves the browser
- Free and unlimited usage
- High‑quality results
Start using Watermark PDF now – it’s completely free and works instantly in your browser.
Frequently Asked Questions
Can I use an image or logo as a watermark?
Not currently — only a text watermark is supported.
Can I watermark only some pages?
Not currently — the watermark is applied to every page of the document.
Can I make the watermark semi-transparent?
Yes, adjust opacity from fully transparent to fully opaque.
Will the watermark be removable?
The watermark text is drawn directly into the page content, so it isn't removable through ordinary editing.
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