Add Watermark to PDF Files Online Free
Are you sharing an original research paper, a creative portfolio, or a confidential business proposal? Protect your intellectual property! HB Tools PDF Watermark Creator by Haridash lets you stamp a custom text (like "CONFIDENTIAL" or "DRAFT") or your company's transparent PNG logo onto every page of your PDF instantly.
How does the Live Stamp tool work?
- Upload PDF: Select your document. Our tool will analyze the number of pages instantly.
- Text or Image: Choose if you want to type text or upload an image. Use our Live Preview Canvas to adjust the color, size, rotation angle (e.g., 45 degrees diagonal), and transparency (opacity).
- Apply to All Pages: Click "Apply Watermark". The tool will automatically calculate the center of every single page (even if the pages are different sizes) and hard-code your watermark into the PDF layer.
100% Secure & Processed in Browser
Documents that need a watermark are usually highly sensitive. Unlike other websites that upload your original files to their cloud servers, HB Tools processes the entire stamping operation locally inside your own web browser using the PDF-Lib engine. Your documents are never uploaded to the internet, guaranteeing complete data privacy.