Watermark PDF Documents
Stamp clean, protective text or logo watermarks onto your documents. Adjust exact positions, opacity, rotation angle, colors, and skip cover pages with live preview.
Select PDF to Watermark
Drag and drop your PDF here, or browse files from your computer or mobile device.
document.pdf
Simulated real-time Page 1 preview. Sliders and position changes apply directly above.
Watermark Styling
No image logo selected
Supports PNG or JPG logos with transparency
Watermarking PDF...
Embedding vector text and calculating coordinate transforms
Watermark Applied!
Your watermarked PDF document is ready for immediate download.
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Vector Overlay Precision
Watermarks are stamped as crisp vector typography layers, preserving document readability, searchability, and print quality.
Live Interactive Preview
Preview your actual document with real-time feedback on rotation angles, transparency, typography, and 9-point grid alignment.
100% In-Browser Privacy
Processing executes locally in browser memory. Confidential client agreements, blueprints, and tax files never touch remote servers.
How to Add a Watermark to a PDF Online
Protect and brand your documents in three simple steps.
Upload Your PDF
Drag and drop your document into the upload area or click "Choose PDF File" to select from your phone, tablet, or computer.
Configure Style & Position
Type custom text or upload a logo stamp. Adjust position on the 9-point grid, change opacity and angle, and preview the result live.
Download Watermarked PDF
Click "Apply Watermark to PDF Now". The in-memory vector engine stamps your pages and generates an instant download.
Why Apply Watermarks to PDF Files?
Distributing confidential contracts, early drafts, and intellectual property without ownership markings leaves work vulnerable to unauthorized leaks, duplication, or confusion over document finality. Watermarking establishes immediate ownership:
Contract Drafts & Version Control
Stamp "DRAFT" across working proposals to ensure stakeholders and clients do not mistake in-progress terms for finalized agreements.
Sensitive Business Information
Apply diagonal "CONFIDENTIAL" stamps across pitch decks, audit reports, and revenue forecasts to remind recipients of legal non-disclosure terms.
Brand Identity & Copyright Safeguards
Add subtle corporate logos, company names, or copyright notices to whitepapers, ebooks, and creative portfolios before sharing online.
Accounting & Payment Verification
Stamp "PAID", "VOID", or "COPY" on customer billing receipts and tax filings to keep audit histories clear and tamper-evident.
Frequently Asked Questions
Common questions about adding text and image watermarks to PDF files.
Are my confidential documents uploaded to any remote server?
No. The entire process takes place 100% locally within your browser sandbox using client-side JavaScript (`pdf-lib` and `pdf.js`). Your confidential business proposals, tax records, and personal files never travel across the internet.
Can I skip watermarking the cover page?
Yes! In the settings panel under "Target Pages", select "Skip Cover Page (Start Page 2)". The first page will remain completely untouched while all subsequent pages receive the watermark.
Does watermarking degrade the text or image quality of my PDF?
No. The engine injects crisp vector text strings or transparent image layers over the existing PDF content streams without recompressing, resampling, or rasterizing existing document pages.
What is the difference between "Above Content" and "Behind Content"?
Above Content stamps the watermark over existing text and illustrations (with opacity transparency so content remains readable). Behind Content (Underlay) places the watermark beneath text layers, functioning like branded letterhead paper.
Is there a file size limit or fee for watermarking PDFs?
No. The tool is 100% free with no registration, subscription tiers, watermarks of our own, or usage quotas.