Add Watermark

Add Watermark is a free online tool that add custom text or image watermarks to your PDF documents. Protect your content and add branding instantly. Process images directly in your browser with no file uploads to external servers.

Upload PDF File

Drag and drop a PDF file here, or click to browse

Max file size: 5 MB

What is Add Watermark | Rune

Add custom text or image watermarks to PDF documents with full control over position, opacity, size, color, and rotation. All processing happens in your browser, no uploads, no storage, complete privacy. Supports popular image formats including PNG, JPG, JPEG, WebP, GIF, BMP, and SVG for maximum compatibility.

All image processing happens client-side in your browser, ensuring your photos and graphics remain private. Preview your changes in real time before downloading the final processed image to your device. Optimized for handling high-resolution images without quality loss or excessive processing time. This tool runs entirely in your browser.

Instant

Processing

100%

Private

Text/Image

Watermarks

All Pages

Coverage

The Advantage of Using Add Watermark on Rune

Add Watermark on Rune handles text watermarks and image watermarks without requiring an account or a software download. Open the page, use the tool, close the tab. Nothing is stored and nothing is tracked.

Where most alternatives lock their best features behind a paywall, Rune keeps Add Watermark genuinely accessible. Add custom text watermarks with full control over font size, color, opacity, and rotation settings. That alone saves time for anyone who needs quick, reliable results on a daily basis.

Key Features of Add Watermark

From text watermarks to adjustable opacity, everything packed into one tool

Text Watermarks

Add custom text watermarks with full control over font size, color, opacity, and rotation settings.

Image Watermarks

Upload your logo or any image as a watermark in PNG or JPEG format with adjustable size.

Customizable Position

Choose from 6 position options including center, corners, and diagonal placement.

Privacy First

All processing happens in your browser. Your files never leave your device, complete privacy.

Instant Processing

Add watermarks in seconds with real-time progress tracking and live preview.

Adjustable Opacity

Control transparency from subtle background marks to prominent overlays.

Key Advantages of Add Watermark

Browser-based processing

Every operation in Add Watermark runs locally on your device. Your data stays in your browser and is never sent to external servers.

Text Watermarks

Add custom text watermarks with full control over font size, color, opacity, and rotation settings. This feature is available for free with no usage limits on the standard tier.

Privacy by default

Add Watermark processes your data on your machine. Your files and text stay local. Nothing is stored after you close the tab.

Mobile and desktop ready

Add Watermark works on any screen size. The interface adapts to phones, tablets, and desktops so you can use it wherever you are.

No account needed

Use Add Watermark without creating an account or providing an email address. The free tier gives you full access to core features.

Free with no hidden costs

Add Watermark is completely free on the standard tier. There are no trial periods, no watermarks on output, and no surprise paywalls after you start using it.

Who Benefits from Add Watermark

Add Watermark fits into a wide range of workflows. Here is how different users put it to work.

Students and Academics: Use Add Watermark for assignments, research papers, and coursework. Add custom text watermarks with full control over font size, color, opacity, and rotation settings.
Professionals and Teams: Integrate Add Watermark into your daily workflow for faster turnaround on routine tasks. Upload your logo or any image as a watermark in PNG or JPEG format with adjustable size.
Content Creators and Freelancers: Speed up your creative process with Add Watermark. Choose from 6 position options including center, corners, and diagonal placement.
Developers and Technical Users: Add Add Watermark to your toolkit for quick utility tasks between coding sessions. All processing happens in your browser. Your files never leave your device, complete privacy.

How to Use Add Watermark

Start using Add Watermark in 3 quick steps

Upload Your PDF

Click the upload button or drag and drop your PDF file into the upload area.

Configure Watermark

Choose text or image watermark, customize position, opacity, size, color, and rotation.

Download Result

Preview the watermark, click 'Add Watermark', then download your watermarked PDF.

Pro Tips

Use 30-50% opacity for watermarks that are visible but don't obscure the document content.
Diagonal watermarks are harder to remove and provide better document protection.
PNG images with transparent backgrounds work best for logo watermarks.
Use the live preview to fine-tune your watermark before applying it to all pages.
Repeat the watermark across the entire page in a tiled pattern for maximum protection against cropping.

Getting the Best Results with Add Watermark

Getting started with Add Watermark takes seconds. Click the upload button or drag and drop your PDF file into the upload area. The interface loads quickly and puts the essential controls front and center so nothing slows you down.

Once your input is ready, configure watermark. Choose text or image watermark, customize position, opacity, size, color, and rotation. Results appear in real time, giving you immediate feedback before you commit to a final output.

Finally, download result. Preview the watermark, click 'Add Watermark', then download your watermarked PDF. The entire process from start to finish typically takes under a minute for most inputs.

For the best experience, keep these points in mind: Use 30-50% opacity for watermarks that are visible but don't obscure the document content. Diagonal watermarks are harder to remove and provide better document protection. Small adjustments like these can make a noticeable difference in your output quality.

What You Can Do with Add Watermark

TASK 01

Text Watermarks

Add custom text watermarks with full control over font size, color, opacity, and rotation settings. Available for free with no file size restrictions on the standard tier.

TASK 02

Image Watermarks

Upload your logo or any image as a watermark in PNG or JPEG format with adjustable size. Available for free with no file size restrictions on the standard tier.

TASK 03

Customizable Position

Choose from 6 position options including center, corners, and diagonal placement. Available for free with no file size restrictions on the standard tier.

TASK 04

Privacy First

All processing happens in your browser. Your files never leave your device, complete privacy. Available for free with no file size restrictions on the standard tier.

Explore More Tools

Discover other powerful tools to boost your productivity

PDF Merge

Combine multiple PDF files into one document instantly

Open Tool

Blur Image

Add blur effects to images for privacy or artistic purposes

Open Tool

Explore All Tools

Discover 145+ powerful tools for productivity, development, and creativity

View All

Frequently Asked Questions

Common questions about Add Watermark, answered below

What is a PDF watermark?

A PDF watermark is text or an image that appears on every page of a PDF document. It's commonly used to mark documents as confidential, drafts, copyrighted material, or to add branding. Watermarks are typically semi-transparent so the underlying content remains visible.

Can I add both text and image watermarks?

Yes! Our tool supports both text watermarks (like 'CONFIDENTIAL' or 'DRAFT') and image watermarks (like logos or stamps). Simply switch between the text and image tabs to choose your preferred watermark type.

How do I control watermark transparency?

Use the opacity slider to adjust watermark transparency. Lower values (0.1-0.3) create subtle watermarks that don't obscure the content, while higher values (0.5-1.0) make the watermark more prominent. The default 0.3 works well for most documents.

Can I position the watermark anywhere on the page?

Absolutely! Choose from 6 position options: Center, Top Left, Top Right, Bottom Left, Bottom Right, and Diagonal. The diagonal option automatically rotates the watermark at a 45-degree angle across the page for a classic watermark look.

Is my PDF safe when adding watermarks?

100% safe! All watermark processing happens locally in your browser. Your PDF never leaves your device, is not uploaded to any server, and is automatically deleted from memory when you close the page. Complete privacy guaranteed.

What image formats are supported for watermarks?

We support PNG and JPEG/JPG image formats for watermarks. PNG is recommended if your logo or image has transparent backgrounds. The tool will automatically handle the image embedding into your PDF.

Can I change the watermark color and size?

Yes! For text watermarks, you can customize the font size (12-96 points) and color using the color picker. You can also adjust the rotation angle (0-360 degrees) to create angled watermarks for added security.

Will the watermark appear on all pages?

Yes, the watermark is automatically applied to every page of your PDF document. This ensures consistent branding or marking throughout the entire document.

Still need help?

Can't find what you're looking for? Our support team is here to assist you.

Contact Support

Tool Rating

Help other users by sharing your experience.

4.8 (641 ratings)

Rate this tool:

Optional feedback