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Stamp PDFs with Text or Image Watermarks Locally

Add "CONFIDENTIAL", logos, or custom text watermarks to PDFs entirely in your browser. No upload. 100% secure local processing.

Select or Drop PDF File Here

100% In-Browser Memory Processing • Zero Server Uploads

Choose Files
ISO 32000-2 Document Processing Standard HandleMyFile is fully compliant with ISO 32000-2 standards. By utilizing client-side WebAssembly, your documents are securely processed in an average of 0.8 seconds without ever leaving your device, ensuring maximum privacy and compliance.

Why Watermark PDFs Offline?

Adding watermarks means your document is sensitive. Never upload draft contracts or confidential reports to a cloud watermarker.

How to Watermark a PDF

Step 1

Open PDF

Select the PDF to watermark.

Step 2

Design Watermark

Type text or upload a logo image.

Step 3

Apply & Download

Get your watermarked PDF in one click.

100% Secure Local Processing

All operations are performed directly on your local device. We use advanced WebAssembly technology to process your documents without ever uploading them to external servers, ensuring complete privacy.

Confidential Drafts Stay Private

Draft contracts and unreleased designs watermarked locally without any server contact.

Stamp Thousands of Pages Instantly

Apply watermarks to a 1000-page document in under 3 seconds. All in your browser.

Frequently Asked Questions

Can I use a logo as a watermark?

Yes, upload a PNG logo and set transparency.

Can I adjust watermark opacity?

Yes, from 10% to 100% opacity.

Can I apply it to specific pages only?

Yes, choose page ranges.

Is diagonal placement available?

Yes, rotate watermarks to any angle.

Is this free?

Yes, always free.

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