PDF Watermark
Add text watermarks to every page of a PDF. Adjustable opacity, font size, rotation angle, and color. Perfect for marking documents as DRAFT, CONFIDENTIAL, or with a copyright notice. Runs entirely in your browser.
Drop PDF here or click to upload
Any PDF · Watermark added in your browser
PDF Watermark runs 100% in your browser
Your files are never uploaded to any server. All processing happens locally on your device using modern browser technology. Private, fast, and free.
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How to Add a Watermark to a PDF Online
Open the PDF Watermark tool
Navigate to the tool. No signup, no upload to a server.
Upload your PDF
Drop any PDF — contracts, drafts, photographs compiled into a PDF, any document.
Configure the watermark
Type the text (e.g., CONFIDENTIAL, DRAFT, your name). Adjust opacity, font size, rotation angle, and color. Preview shows the placement live.
Download the watermarked PDF
Hit Apply — the watermark is stamped across every page. Download the result instantly.
Pro Tips
- •Diagonal watermarks (45° rotation) are most readable and hardest to crop out — the classic CONFIDENTIAL or DRAFT look.
- •Keep opacity between 15-30% for a subtle stamp that doesn’t obscure the text underneath.
- •Use larger font sizes (60-120pt) for full-page watermarks. Smaller sizes (24-48pt) for repeating tiles look professional.
- •Pick a color with intent: red for warnings, gray for neutral marking, dark navy for legal documents.
- •Watermarks are added as a layer over the original content — your source PDF is preserved underneath.
Who needs PDF Watermark?
Students
Academic work and assignments
Professionals
Business and office tasks
Creatives
Design and content creation
Everyone
Personal everyday tasks
When to Use PDF Watermark
Mark drafts and revisions
Stamp DRAFT or REVISION 2 across a document so reviewers know they’re not looking at the final version.
Confidential business documents
Add CONFIDENTIAL or NOT FOR DISTRIBUTION to internal contracts, financial reports, or strategy docs.
Copyright protection
Add your name or company copyright across shared PDFs to discourage unauthorized redistribution.
Sample or watermarked versions
Share preview versions of paid content with a clear PREVIEW or SAMPLE watermark to prevent free distribution.
Frequently Asked Questions
Is my PDF uploaded?
No. The watermark is added entirely in your browser using pdf-lib. Your document never leaves your device.
Can I add an image watermark instead of text?
Currently this tool supports text watermarks only. For image watermarks, use our PDF Editor or convert your image to a logo overlay first.
Will the watermark show on every page?
Yes — the watermark is stamped uniformly across all pages of the PDF for consistent branding or marking.
Can someone remove the watermark?
Watermarks are part of the PDF’s page content. Determined users with PDF editors can sometimes remove them, but for casual viewing or print-and-scan workflows, they’re very effective.
What’s the best font size for full-page watermarks?
60-120pt at 45° rotation typically fills the page nicely. Adjust based on text length — short words can go larger, long phrases benefit from smaller sizes.
PDF Watermark vs Alternatives
Watermarking PDFs is a common need for legal, business, and creative use — here’s where this tool fits.
Adobe Acrobat Pro
Industry standard
Key difference: Most flexible watermark options but requires a paid subscription and a learning curve.
Online PDF services
Smallpdf, iLovePDF, etc.
Key difference: Convenient but require uploading your file to their servers — a risk for confidential drafts and signed contracts.
Microsoft Word watermark + export
Roundabout approach
Key difference: Only works if you have the original Word source. Doesn’t help when you need to watermark a received PDF.
Browser-only processing, full control over opacity/rotation/color, no upload, no signup, instant download. Ideal for sensitive documents.
Good to know
- All processing happens in your browser. Very large files may be slower on mobile devices or older computers.
- Results depend on the quality and format of your input. For best results, use high-quality source files.
- Once you close the browser tab, all data is gone. Make sure to download your results before closing.
Key Features
100% Free
No hidden fees, no premium tiers, no limits on how much you use it. Free today, free tomorrow, free forever.
Complete Privacy
Your files never leave your device. Everything is processed locally in your browser — we physically cannot access your data.
No Registration
Start using the tool immediately. No account, no email, no personal information required. Just open and use.
Works Everywhere
Compatible with Chrome, Firefox, Safari, and Edge on desktop and mobile. Works offline once the page has loaded.
Full Step-by-Step Guide
Detailed walkthrough with pro tips and best practices for getting the best results every time.
Read guideFrequently Asked Questions
Every common question answered — file limits, privacy, supported formats, compatibility, and more.
View FAQCompare Alternatives
See how PDF Watermark stacks up against Adobe, Smallpdf, and other paid and free alternatives.
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