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Watermark PDF Online for Free
Protect and mark your PDF documents with customizable text watermarks like "CONFIDENTIAL", "DRAFT", or your company name. Adjust opacity, font size, angle, and page coverage.
Select or Drop a PDF to Watermark
Add text stamps like CONFIDENTIAL, DRAFT, or custom branding.
Formats: .pdf100% Client-Side Privacy
How to Use Watermark PDF in PDFArk
1
Upload PDF
Select the PDF document to watermark.
2
Customize Text
Type your custom watermark text and adjust angle, opacity, and size.
3
Apply Watermark
Generate and download your watermarked document instantly.
Why Choose PDFArk Watermark PDF
Custom watermark text and preset options (CONFIDENTIAL, DRAFT, COPY)
Adjustable opacity (10% to 100%) and font scale
Diagonal (45°) or horizontal orientation
Apply to all pages or selective ranges
Frequently Asked Questions
Does the watermark cover the underlying text?
You can adjust opacity so text beneath remains readable while clearly displaying the watermark overlay.