PDF Watermark Tool

PDF watermarking adds text, images, or stamps to your PDF pages to protect or brand your documents. Our tool processes everything in your browser using client-side technology, ensuring your files never upload to our servers. This guarantees complete privacy and security for your documents while maintaining original quality.

Our tool supports three types of watermarks: Text watermarks (custom text with font, size, and color options), Image watermarks (upload your logo or any image), and Stamp watermarks (predefined stamps like CONFIDENTIAL, DRAFT, APPROVED, etc.). Each type offers full customization for position, opacity, and rotation.

Yes! You have complete control over watermark appearance. Choose from 9 position options (corners, centers, middle), adjust opacity from 10% to 100%, rotate from -90° to +90°, select colors, and customize sizes. You can also choose to apply watermarks to all pages or specific pages only.

No, adding watermarks does not degrade the quality of your PDF document. Our watermarking process preserves the original document quality, fonts, images, and formatting. Watermarks are added as overlay elements without compressing or altering the underlying content.

For image watermarks, we support common formats including JPG, PNG, GIF, and BMP. PNG images with transparency work best as they blend naturally with the document. We recommend using high-quality images for the best watermark appearance, though the tool will automatically optimize them for PDF embedding.

Password-protected or encrypted PDF files cannot be watermarked until they are unlocked. You'll need to remove the password protection from the file first using the original password. Once unlocked, you can add watermarks normally. The resulting watermarked PDF will not be password-protected unless you secure it separately.

Watermark opacity depends on your purpose. For copyright protection, use 20-40% opacity to maintain readability while showing ownership. For draft documents, 50-70% opacity makes the watermark clearly visible. For subtle branding, 15-30% opacity works well. The preview feature lets you test different opacity levels before applying.

Yes! You can choose to watermark all pages or select specific pages. When you select "Specific Pages" in the settings, you can click on individual pages in the preview to select which ones should receive the watermark. This is useful for adding watermarks only to certain sections of your document.

Our stamp watermarks include common business stamps: CONFIDENTIAL, DRAFT, APPROVED, REJECTED, COPY, SAMPLE, and URGENT. These professional stamps are perfect for document workflows, legal documents, and business processes. You can customize their color, position, opacity, and rotation just like other watermark types.

Yes, our PDF watermark tool is completely free to use with no hidden costs or registration requirements. You can add watermarks to unlimited PDF files with full access to all features including text, image, and stamp watermarks. There are no restrictions on file size, number of pages, or watermark customization options.