Can I customize the watermark color and angle?

Yes. You can choose between Slate Gray, Crimson Red, or Navy Blue, and set the angle to -45° Diagonal, +45° Diagonal, or 0° Horizontal.

Is the watermark applied to every page of the PDF?

Yes. The watermark is automatically centered and scaled proportionally on every page of your document.

Are my confidential drafts uploaded to a server when adding a watermark?

Never. Everything happens locally inside your browser tab.

Can I also add page numbers at the same time?

After downloading your watermarked PDF, you can open it in our Page Numbers tool to add headers or footers in seconds.

Add Watermark to PDF Online for Free

Imprint custom diagonal or horizontal text watermarks like CONFIDENTIAL, DRAFT, or your company name across every page of your PDF. 100% client-side with zero uploads.

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PixelsKits PDF Tools remain 100% free & private with zero file uploads thanks to non-intrusive sponsor placements.

or drag and drop your file here

Accepted: PDF files (.pdf)Max 100 MB per file100% Local Browser Memory

100% Private (Runs locally in browser)

Instant on-device processing

Zero files stored on servers

How to Add Watermark to PDF in 3 Simple Steps

No software installation or account signup required. Everything finishes in seconds right inside your browser.

01.

Select your PDF document

Drop the PDF you want to watermark into the browser workspace.

02.

Customize text, opacity & angle

Type your watermark text (e.g., CONFIDENTIAL or DRAFT), pick Slate, Red, or Blue ink, and set opacity and rotation.

03.

Download watermarked PDF

Click Apply Watermark & Download to stamp vector text onto every page instantly.

Why Use PixelsKits for Add Watermark to PDF?

Built with the same privacy-first browser architecture that powers PixelsKits.

01. Crisp Vector Text Stamping

Watermarks are drawn as scalable vector typography rather than blurry images, staying sharp at any zoom level.

02. Full Opacity & Angle Control

Set subtle 15% translucent background watermarks that keep body text readable, or bold 45° diagonal stamps.

03. One-Click Quick Presets

Choose CONFIDENTIAL, DRAFT, DO NOT COPY, or SAMPLE presets or type any custom company text.

04. Instant Local Processing

Watermarks a 100-page PDF in under a second right inside your browser.

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PixelsKits PDF Tools remain 100% free & private with zero file uploads thanks to non-intrusive sponsor placements.

Frequently Asked Questions About Add Watermark to PDF

Common questions about using our private browser-based Add Watermark to PDF tool.

No. By default we use a 20% translucent opacity so the watermark is clearly visible against copying while the body text remains 100% legible.

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