Add Watermark to PDF - Client-Side & Secure

Add Watermark to PDF

Quickly add custom text watermarks to your PDF documents securely in your browser with full formatting control.

Choose a PDF or Drag and Drop here

Instant local validation • 100% Client-side Processing

How to Use This Tool

Follow these simple steps to add custom text watermarks to your PDF documents instantly.

Upload Document

Upload your PDF by dragging it into the drop zone or clicking browse.

Set Text & Position

Type your watermark text and position it using the interactive preview grid.

Format Styles

Fine-tune rotation angle, font size, color, opacity, and page range.

Export & Save

Click apply, wait for processing, and download your secured PDF.

Frequently Asked Questions

Is it safe to add a watermark to sensitive PDF files here?

Yes, your documents are 100% safe. The entire watermarking process takes place locally within your browser using client-side JavaScript. Your files are never uploaded to any cloud server or external database, ensuring total privacy.

Can I apply watermarks to specific pages instead of the whole document?

Yes, the page range selector allows you to define exact start and end page numbers. You can apply your watermark across all pages or target specific page intervals as needed.

What formatting options are available for the watermark text?

You have total control over font family, text dimensions, custom colors, rotation angles, 9-point grid placement, and opacity levels to ensure text readability without obscuring essential document content.

Is there any limitation on the number of PDFs I can watermark?

No, this web tool is completely free and allows unlimited PDF watermarking without watermarking limits, registration requirements, or hidden subscription costs.

Will watermarking reduce the original quality of my PDF?

No, the original PDF vector graphics, high-resolution images, and text formatting are preserved intact. The watermark is simply rendered as an additional vector text layer on top of your selected pages.

Can I add multiple watermarks to the same document?

Yes, you can apply a watermark, download the watermarked file, and re-upload the output to add a second watermark with different text, rotation, or positioning.

Does this tool work on mobile devices and tablets?

Yes, this tool is fully responsive and optimized for mobile and tablet browsers with complete touch-friendly 3x3 grid selection and live canvas previewing.

Adding watermark...

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