Add Watermark to PDF Online — Free PDF Watermark Tool
Add text watermark
Adding a watermark to a PDF is essential for marking documents as drafts, confidential, or proprietary. Our free watermark tool lets you overlay custom text on every page of your PDF with control over font size, color, opacity, and position — all in your browser.
Whether you are protecting intellectual property, labeling document status, or branding pages before distribution, this tool handles it without uploading your file to any server. The result is immediate and your documents remain private.
How to Watermark
- Upload the PDF file you want to watermark.
- Enter your watermark text and customize the appearance (size, color, opacity, position).
- Preview the result on your pages.
- Click Apply and download the watermarked PDF.
Why Use Our Watermark Tool
Adding watermarks should not require expensive PDF editing software. This free tool runs directly in your browser, works on any device, and keeps your files private since nothing leaves your machine. Customize the text exactly how you need it and download instantly.
Need more advanced features?
Adobe Acrobat Pro
Advanced editing, OCR, e-signatures, and batch processing
Your Privacy Matters
Watermarking happens entirely on your device using browser-based processing. Your PDF is never uploaded, stored, or shared with any external service. Close the tab and all data is erased from memory.