Add Watermark or Page Numbers

Protect your documents with custom watermarks or organize them with automatic page numbers. All processing happens locally in your browser.

or drop file here

Supports single PDF • 100% Local process in your device

How to Add Watermark or Page Numbers to PDF

Protect your intellectual property or organize your documents in three simple steps. Our real-time preview lets you see exactly how the final result will look.

1

Upload your PDF

Click the Select PDF File button or drag and drop your document into the upload area. Your file stays on your device—nothing is uploaded to any server.

2

Customize & Preview

Choose between Add Watermark or Add Page Numbers.

  • For Watermarks: Enter your text (e.g., "CONFIDENTIAL"), then adjust the opacity, rotation angle, font size, color, and density. Watch the changes appear instantly on the page previews on the left.
  • For Page Numbers: Select the position (header/footer), choose a format (e.g., "Page 1 of 5"), set the starting number, and customize the font style.
3

Apply & Download

Once you are satisfied with the preview, click the Apply & Download PDF button. Your watermarked or numbered PDF will be generated instantly and ready for download.

Why Choose CedarPDF for Watermarking?

100% Private & Secure

Watermarks are often used for sensitive or copyrighted materials. Unlike other tools, CedarPDF processes everything locally in your browser. Your documents never leave your device, ensuring complete confidentiality and security.

Real-Time Visual Preview

Don't guess how your watermark will look. Our tool renders a live preview on every page as you adjust settings. You can see the exact opacity, rotation, and density before you even click "Apply".

Professional Customization

Go beyond basic text. Control every aspect of your watermark including opacity, rotation angle, font size, color, and density. Create subtle background patterns or bold copyright notices with precision.

Two Tools in One

Need to protect a draft? Add a watermark. Need to organize a report? Add page numbers. Switch between modes instantly without reloading the page or uploading the file again.

Frequently Asked Questions

Can I adjust the transparency of the watermark?
Yes! You have full control over the watermark's opacity. Use the "Opacity" slider to make it faint (for background use) or solid (for strong copyright notices). The preview updates instantly as you slide.
Can this tool add page numbers too?
Absolutely. Simply select the "Add Page Numbers" radio button. You can choose the position (header/footer), format (e.g., "Page 1 of 10"), starting number, and font style. It's perfect for reports, ebooks, and legal documents.
Is my document safe? Do you store my files?
Your data is 100% safe. CedarPDF runs entirely in your web browser. Your PDF files never leave your device and are never uploaded to our servers. This is crucial for watermarking sensitive or confidential documents.
What does the "Density" setting do?
Density controls how frequently the watermark text repeats across the page. Low density places fewer watermarks (good for subtle branding), while High density creates a tight pattern that covers the entire page (ideal for "CONFIDENTIAL" or "DRAFT" stamps).
Is the watermark permanently embedded in the PDF?
Yes. Once you click "Apply," the watermark or page numbers are flattened directly into the PDF content. They become an integral part of the document and cannot be easily removed or edited by standard PDF readers, ensuring your protection holds.
Can I watermark all pages at once?
Yes! By default, the watermark or page numbers are applied to every single page of your PDF automatically. You don't need to select pages individually. For page numbers, you can optionally choose to start from a specific page (e.g., skip the cover page).
Is there a limit to how many files I can process?
No limits at all. CedarPDF is completely free to use. You can watermark unlimited PDF files, regardless of their size or page count, without needing to register or pay.