Watermark PDF

Upload your PDF, choose between a text or image watermark, customize the appearance (font, size, color, opacity, rotation), select which pages to apply it to, and click Add Watermark. The watermarked PDF downloads instantly with your branding or security mark permanently embedded.

The tool supports two types of watermarks:

• Text watermarks — Add custom text like “CONFIDENTIAL”, “DRAFT”, your company name, or copyright notice with full control over font, size, color, and rotation.
• Image watermarks — Upload a logo, signature, or graphic (PNG with transparent background works best) to brand your document visually.

Yes. The repeating (tiled) watermark option places multiple copies of your watermark in a grid pattern across the entire page. This is the most secure option for preventing unauthorized copying or screenshots, as the watermark cannot be easily cropped out. You can adjust the spacing between repetitions for the perfect balance between security and readability.

You have full control over the watermark appearance:

• Opacity: Adjust transparency from subtle (low opacity) to bold (high opacity). Lower values let the document content show through clearly.
• Rotation: Rotate the watermark to any angle. Diagonal watermarks (typically 30° to 45°) are the most popular for security, as they are harder to remove or obscure.

Absolutely. You can choose to apply the watermark to:

• All pages — The watermark appears on every page of the document
• First page only — Perfect for cover pages with branding
• Last page only — Ideal for copyright notices or disclaimers
• Custom pages — Enter specific page numbers or ranges like 1, 3, 5-8 for precise control

No. Adding a watermark is a non-destructive process that overlays your text or image on top of the existing content. It does not recompress, resize, or alter the original quality of your PDF. Text remains sharp, images retain their resolution, and colors stay accurate. The only change is the addition of your watermark layer.

It depends on how the watermark was added. If the watermark was added as a separate layer, it may be removable with specialized PDF editing software. However, if the PDF was flattened after adding the watermark, it becomes permanently merged with the page content and cannot be easily removed. We recommend keeping an unwatermarked backup of your original file.

Watermarks serve multiple important purposes:

• Brand protection — Display your logo or company name to establish ownership
• Document status — Mark drafts as “DRAFT”, “CONFIDENTIAL”, or “APPROVED”
• Copyright notice — Add copyright information to protect intellectual property
• Security — Repeating watermarks discourage unauthorized copying or distribution
• Authentication — Verify that a document is an official copy from your organization

Yes, completely. All watermarking operations happen 100% locally in your web browser using client-side technology. Your PDF files never leave your device and are never uploaded to any server. We cannot see, access, or store your documents, ensuring maximum privacy for sensitive contracts, legal forms, and confidential business materials.

Yes. Once the page has fully loaded, you can disconnect from the internet and continue using the tool normally. All PDF processing and watermark rendering happens locally in your browser memory. Just avoid refreshing the page while offline, as the core libraries need to be downloaded the first time. This makes it perfect for working with sensitive documents in secure environments.

For optimal performance, we recommend keeping PDF files under 50 MB. Larger files can still work on modern desktop computers, but may process slower on mobile devices or computers with limited memory. If your PDF is too large, try our Compress PDF tool first to reduce its size before adding the watermark.

Yes. The interface is fully responsive and optimized for modern mobile browsers on Android and iOS. You can upload PDFs, customize watermarks, and download the watermarked document directly from your phone or tablet. For precise watermark positioning and complex settings, a desktop computer may provide a more comfortable experience, but mobile works great for quick watermarking tasks.