PDF Watermark

Add text watermarks to your PDF

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What is Files360 PDF Watermark?

Files360 PDF Watermark lets you add professional text watermarks to any PDF document. Customize text, color, opacity, position, rotation, and font size — all processed in your browser with zero server uploads.

How to Use Files360 PDF Watermark

1

Upload Your PDF

Click or drag your PDF file into the upload area. A preview of the first page is generated automatically.

2

Enter Watermark Text

Type the watermark text — common options include 'CONFIDENTIAL', 'DRAFT', 'SAMPLE', your company name, or any custom text.

3

Customize Appearance

Adjust color, opacity (transparency), font size, rotation angle, and position. The live preview shows how your watermark will look.

4

Choose Pages

Apply the watermark to all pages or select specific pages by entering page numbers.

5

Apply & Download

Click Apply Watermark to process, then download the watermarked PDF.

Key Features

Custom Watermark Text

Enter any text — company names, 'CONFIDENTIAL', 'DRAFT', dates, or custom messages.

Full Appearance Control

Customize color, opacity (5-100%), font size (12-120px), and rotation angle (-90° to 90°).

6 Position Options

Place watermarks at center, diagonal, top-left, top-right, bottom-left, or bottom-right of each page.

Page Selection

Apply to all pages or specify individual pages. Perfect for watermarking only certain sections.

Live Preview

See a real-time preview of how the watermark will appear on your document before applying.

100% Browser-Based

Your PDF never leaves your device. Powered by pdf-lib (MIT License) for complete privacy.

Files360 PDF Watermark is a professional tool for adding text watermarks to PDF documents directly in your browser. Watermarking is essential for protecting intellectual property, marking document status (DRAFT, CONFIDENTIAL, APPROVED), and preventing unauthorized distribution of sensitive materials.

The tool offers comprehensive customization options including custom text, color selection from preset palettes or custom color picker, adjustable opacity for subtle or bold watermarks, font size control, rotation angle for diagonal placement, and six precise positioning options. The live preview shows exactly how your watermark will appear before applying.

Privacy is built into the tool's architecture. All PDF processing happens locally in your browser using the pdf-lib library (MIT License). Your documents never leave your device, making it safe to watermark confidential contracts, financial reports, legal documents, and proprietary materials.

Common use cases include marking drafts before distribution, adding 'CONFIDENTIAL' to sensitive business documents, branding company reports with your organization's name, watermarking photography portfolios for online display, and adding 'SAMPLE' to documents shared for review purposes. The tool is completely free with no limits.

Frequently Asked Questions

Currently, the tool supports text watermarks. Image watermark support is planned for a future update.
No. Watermarks are added as vector text elements that scale perfectly at any print resolution.
Yes. Switch to 'Specific Pages' mode and enter page numbers separated by commas.
Watermarks are embedded directly into the PDF. While they can be removed with advanced tools, they provide a visible deterrent against unauthorized use.