Upload PDF
Add text or image watermarks
Watermark PDF Online
Add custom text stamps or image watermarks to prevent document theft and copyright infringement.
Fast & Simple
How to Use Watermark PDF Online in 3 Easy Steps
Effortlessly process your documents directly in your web browser with zero software installations.
1
Select PDF File
Upload the document you want to stamp with a watermark.
2
Customize Watermark
Choose between Text or Image watermark. Adjust text, opacity, rotation angle, and position.
3
Apply & Download
Click "Watermark PDF" and instantly download your protected, branded document.
Enterprise Quality
Key Features & Performance Highlights
Designed with uncompromising performance, reliability, and security standards for modern workflows.
Text & Logo Watermarks
Insert custom text banners or transparent PNG logos onto any page.
Opacity & Rotation Control
Fine-tune transparency from subtle 15% opacity to solid stamps with 45\u00b0 diagonal angles.
Above or Behind Content
Choose whether the watermark floats over text or sits discreetly behind document layers.
Selective Page Stamping
Apply watermarks to all pages or restrict stamping to specific page numbers.
Encrypted Security
Protected by 256-bit SSL encryption. All documents are permanently deleted automatically within 24 hours.
Lightning Fast Stamping
Watermark multi-hundred-page documents in just seconds.
About Watermark PDF Online
Sharing draft manuscripts, confidential pitch decks, sample proofs, or proprietary reports requires safeguarding against unauthorized reuse and leaks. AmorPDF Watermark PDF allows you to stamp customized text (e.g. "CONFIDENTIAL", "DRAFT", "SAMPLE") or company logos onto your PDF pages.
Control opacity, font style, size, rotation angle (such as 45\u00b0 diagonal), layer placement (above or below text), and choose whether the watermark appears on all pages or specific page intervals.
Technical Specifications
- Supported Input PDF (.pdf)
- Output Format Watermarked PDF (.pdf)
- Avg. Processing Speed < 5 seconds
- Security & Encryption 256-bit TLS
- Data Retention Auto-purged (within 24h)
- Device Compatibility Windows, Mac, iOS, Android
Help & FAQs
Frequently Asked Questions
Common questions and answers regarding our Watermark PDF Online tool.
Can I use my company logo as a watermark?
Yes! You can upload PNG, JPG, or SVG logos and adjust their scale, opacity, and position.
Can recipients remove the watermark easily?
AmorPDF embeds the watermark directly into the PDF content stream, making removal difficult without advanced editing tools.
Can I watermark only certain pages?
Yes, you can specify exact page ranges (e.g. "1-3, 5") to watermark only selected pages.
Will the watermark cover up important text?
You can lower opacity (e.g. 20%) or place the watermark behind the text layer so content remains readable.
Is the tool free to use?
Yes, you can watermark unlimited documents for free on AmorPDF.