Qevirov1.0
Fast, Private In-Browser Tool

Add Watermark

Add text watermarks such as CONFIDENTIAL, DRAFT, or custom labels to PDF documents. Customize position, font size, opacity, and rotation angle directly in your browser with zero cloud storage.

Processed locally in your browser — zero files uploaded to cloud

Drop your add watermark files here

Select a document from your computer or phone

Supports: .pdf application/pdf•Up to 50 MB

How to Use Add Watermark Online

Execute your document operations in 3 simple steps directly in your web browser.

1

Upload PDF

Select or drop your PDF document into the watermark tool.

2

Configure Watermark Text & Style

Enter your watermark text and adjust font size, opacity, and rotation.

3

Apply & Save

Click "Apply Watermark" and download your watermarked document.

Technology & Architecture

What Does Add Watermark Do & How Does It Work?

Qeviro Add Watermark stamps semi-transparent vector text over each PDF page with customized angle and opacity.

Diagonal or Corner Positioning

Center diagonal stamping or subtle header/footer corner placement.

Practical Workflows

Common Add Watermark Use Cases

Proprietary Proposals

Stamp "CONFIDENTIAL" across client proposals before emailing.

Quality Expectations & Tradeoffs

Embeds crisp vector typography that scales smoothly at all zoom levels.

Technical Specifications

Engine:pdf-lib Vector Text Stamping

In-Depth Tutorials & Related Guides

Master professional document and image manipulation techniques.

View All Guides

Frequently Asked Questions

Common questions about add watermark processing, security, and formats.

Will the watermark obstruct my document text?

No. Opacity can be adjusted from 5% to 80% so the watermark is visible without obscuring underlying text.

Can I customize the watermark text, angle, and opacity?

Yes. Enter your custom text (e.g. "CONFIDENTIAL" or "DRAFT"), choose font size, rotation angle, color, and transparency level.

Will the watermark appear on every page of the document?

Yes. The watermark is stamped consistently across all pages as a vector overlay without obscuring underlying content.

Related PDF & Image Tools

Explore other fast, in-browser utilities that integrate with your workflow.