Add a Watermark to a PDF

Add a text or image watermark with OmnisPDF — mark PDFs as CONFIDENTIAL, DRAFT, or add your logo for branding and protection.

Text & Image Watermarks

Files Deleted After Session

Instant Download

Drop your PDF here

or click to browse files

Supported format: .pdf

SECURE PROCESSING

Your file is protected during conversion

ENCRYPTED UPLOADS

Encrypted transfer (TLS/HTTPS)

AUTO-DELETE

Files are removed after processing

BROWSER-BASED

No installs — works in your browser

Use OmnisPDF's Watermark PDF tool to add a watermark to a PDF in seconds. Apply a text watermark (CONFIDENTIAL, DRAFT, SAMPLE) or an image watermark, customize placement and transparency, and download a clean watermarked PDF ready to share.

✓ Add text or image watermarks to PDFs
✓ Mark documents as Confidential, Draft, or Internal Use
✓ Add logo watermarks for branding
✓ Works on Mac, Windows, iOS, Android, and Linux
✓ No installation — watermark PDFs in your browser

Add Text Watermarks (CONFIDENTIAL, DRAFT, SAMPLE)

Insert a clear text watermark across your PDF pages to communicate document status and reduce accidental sharing of sensitive versions.

Add an Image or Logo Watermark

Upload a logo or stamp image and place it on your PDF to brand proposals, invoices, and marketing documents.

Customize Placement, Opacity, and Rotation

Control how your watermark looks — keep it visible without blocking content by adjusting transparency, size, angle, and position.

How to Watermark a PDF

Upload your PDF to OmnisPDF.

Choose Text or Image watermark.

Customize settings: opacity, size, position, rotation.

Click Add Watermark and download your watermarked PDF.

Related Tools

Protect PDF

Add password protection

Compress PDF

Reduce size after watermarking

Merge PDF

Combine watermarked docs

Split PDF

Watermark only sections

Frequently Asked Questions

Can I add a text watermark like CONFIDENTIAL or DRAFT?

Yes. OmnisPDF can apply a text watermark across your PDF pages to clearly label document status.

Can I add a logo watermark to a PDF?

Yes. Upload an image and place it as a watermark on your PDF pages.

Will the watermark appear on every page?

Yes. The watermark is applied to all pages of the PDF by default.

Will watermarking affect the rest of my PDF content?

No. Adding a watermark only overlays the selected text or image onto your pages. All existing content remains untouched.

Is it safe to upload my PDF?

Yes. All transfers are SSL encrypted and your files are deleted immediately after your session. We never store or share your documents.

What is the maximum file size I can watermark?

Pro accounts can upload files up to 200MB. Business accounts can upload files up to 1GB.