Watermark PDF
Text Overlay — All Pages
Select PDF file to watermark
Custom text stamp will be applied to every page
E.g. CONFIDENTIAL, DRAFT, DO NOT COPY
Low = more transparent, High = more visible
Processing... Stamping PDF
Applying watermark to all pages
How to Add a Watermark to a PDF in 3 Steps
Upload Your PDF
Click the upload area and select your PDF. Your file stays on your device — never uploaded.
Set Text & Transparency
Type your watermark text (e.g. CONFIDENTIAL, DRAFT) and adjust the transparency slider to your preference.
Download Watermarked PDF
Click "Add Watermark & Download". Your PDF with the stamp on every page downloads automatically — free.
100% Private
Files are processed locally using pdf-lib. Nothing is ever uploaded to a server.
All Pages Watermarked
The watermark is applied diagonally across the center of every page in your PDF.
Custom Text & Opacity
Enter any watermark text and control how transparent or visible the stamp appears.
Frequently Asked Questions
How do I add a watermark to a PDF online for free? ▼
Upload your PDF, type your watermark text, set the transparency, then click "Add Watermark & Download". Your watermarked PDF downloads automatically — free, no account needed.
Will the watermark appear on every page? ▼
Yes. The watermark is applied diagonally across the center of every page in your PDF document.
Can I customize the watermark text? ▼
Yes. Type any text — CONFIDENTIAL, DRAFT, your company name, etc. You can also adjust the transparency slider to control visibility.
Is adding a watermark to a PDF online safe? ▼
Yes. All processing happens locally in your browser. Your files are never uploaded to any server, making it completely private.