Add Watermark to PDF

Add text or image watermarks to PDF files online. Customize opacity, position, rotation and color instantly without signup.

Add custom text or image watermarks to PDF files online for free. Control opacity, position, rotation, and color with a live preview before downloading. No signup required - all watermarking runs in your browser.

Upload your PDF to get started — no sign-up required.

How to Add a Watermark to a PDF

  1. Upload your PDF - drag it onto the upload zone or click Choose PDF.
  2. Switch between Text and Image watermark modes. For text, enter your watermark label and adjust size, color, opacity and position. For image, upload a PNG or JPG.
  3. Preview how the watermark will look on the first page in the real-time canvas preview.
  4. Click Download PDF to get your watermarked document with the watermark applied to every page.

Why Use PDFCrush?

  • Text and image watermarks with full control over opacity, rotation, and position
  • Live preview on page 1 shows the exact result before you download
  • Six position presets: Center, Diagonal, and all four corners
  • Custom color picker for any watermark shade, including brand colors

Your Privacy & Security

Watermarking runs locally in your browser using pdf-lib. Your PDF and any watermark images are never sent to our servers.

Frequently Asked Questions

Can users easily remove a text watermark added by this tool?

No. The watermark elements are compiled as distinct background objects within the page structure. While determined users with advanced editor access can alter vector layers, it prevents standard copying and unauthorized distribution.

Can I adjust opacity levels so the watermark doesn't block background text?

Yes. You can use precision opacity sliders to dim text stamps down to subtle levels such as 10% -20%, ensuring your watermark is visible while keeping the text underneath readable.

Can I apply a custom company logo image as a watermark across all pages?

Yes. The engine can batch apply either text arrays or custom image graphics uniformly across all page views at a preset angle configuration.

Is my branded corporate data safe from external server tracking?

Yes. The watermarking matrix scripts execute locally inside your browser session. Your proprietary business documents and brand assets are processed safely within your machine's physical limits.

Can I choose a specific font style and color for text stamping?

Yes. The workspace provides a styling panel where you can choose font families, configure font sizes, and select precise hex colors.

Can I select a custom rotation angle like a diagonal layout for watermarks?

Yes. The rotation wheel handles custom styling setups, allowing you to position indicators diagonally at a classic 45 ext{°} angle across the page canvas.

Will applying a text watermark increase the document's overall file size?

No. Since text elements are lightweight vector instructions, adding a text watermark appends minimal data, keeping your file size virtually unchanged.

Can I skip watermarking specific introductory or cover pages?

Yes. You can adjust the page range rules to exclude specific sheets, ensuring your title and introductory pages remain clear of background watermarks.