How do I add a watermark to a PDF file online for free?

To add a watermark to PDF free: 1) Upload your PDF file, 2) Choose watermark type (text or QR code), 3) Enter your watermark text (e.g., 'CONFIDENTIAL', 'DRAFT', company name), 4) Customize color, size, and position, 5) Click 'Add Watermark', 6) Download your watermarked PDF. All processing happens in your browser - completely free, no upload to servers, unlimited usage.

Can I customize the watermark appearance?

Yes! You can fully customize: 1) Text content (any text you want), 2) Color (full RGB color picker), 3) Font size (10-100 points with slider), 4) Position (center, top-left, top-right, bottom-left, bottom-right), 5) Watermark type (text or QR code). The watermark is automatically applied at 50% opacity with a 45-degree diagonal rotation for professional appearance.

Are my PDF files uploaded to a server?

No, your files are never uploaded to any server. All PDF watermarking happens 100% locally in your browser using client-side JavaScript. Your files never leave your device, ensuring complete privacy and security. We don't collect, store, or access any of your documents. This is the safest way to watermark PDFs online.

What is a QR code watermark and when should I use it?

A QR code watermark embeds a scannable QR code into your PDF that can contain any text, URL, or information. Use QR code watermarks to: 1) Link PDFs to online resources or websites, 2) Provide authentication or verification, 3) Track document distribution, 4) Add contact information or company details. When someone scans the QR code with their phone, they'll see the encoded information.

Will the watermark appear on all pages of my PDF?

Yes, the watermark is automatically applied to all pages of your PDF document. Every page will have the same watermark with the exact same appearance, position, color, and size you configured. This ensures consistent branding or security marking throughout the entire document.

Is this PDF watermark tool completely free?

Yes, this PDF watermark tool is completely free with unlimited usage. No registration, no account creation, no email required, no payment, and no hidden fees. You can watermark as many PDFs as you want, as many times as you need - 100% free forever. Unlike other tools, we don't add our own watermark to your output.

What are common watermark text examples I can use?

Popular watermark text examples include: CONFIDENTIAL (for sensitive documents), DRAFT (for work in progress), SAMPLE (for demo documents), COPYRIGHT © 2025 [Company Name], COPY (for non-originals), INTERNAL USE ONLY, NOT FOR DISTRIBUTION, PROPRIETARY, PRIVILEGED, PREVIEW, REVIEW COPY, Company Names, Website URLs, Email Addresses, or any custom text you need.

Can I add a company logo as a watermark?

This tool currently supports text and QR code watermarks. For text-based branding, you can add your company name, slogan, or website URL as a text watermark. For QR codes, you can encode your company website URL, contact information, or any other data. Image/logo watermarks are not currently supported, but you can use text watermarks with your company name for effective branding.

How is this different from Adobe Acrobat watermark tool?

Unlike Adobe Acrobat which requires expensive subscription ($19.99+/month) and software installation, our PDF watermark tool is: 1) Completely free forever, 2) Works in your browser - no software installation, 3) More private - files never uploaded, 4) Cross-platform - works on any OS, 5) No account required, 6) Supports both text and QR code watermarks. We provide professional PDF watermarking functionality like Adobe Acrobat without any cost.

Can I watermark PDFs on mobile phone or tablet?

Yes! Our PDF watermark tool is fully responsive and works perfectly on mobile phones (iPhone, Android) and tablets (iPad, Android tablets). The interface adapts to smaller screens while maintaining all functionality including color picker, font size slider, and position selector. You can watermark PDFs on any mobile device with a modern browser.

What is the maximum PDF file size I can watermark?

There are no hard file size limits imposed by our tool. You can watermark large PDF files (100+ MB) as long as your browser has enough memory. Most modern browsers can handle very large files. The only limitation is your device's available RAM. Processing time increases with file size.

Will the watermark affect PDF quality or file size?

The watermark is added as a layer on top of existing content without affecting the original PDF quality. Text remains crisp, images stay high-resolution. File size may increase slightly (typically 1-5%) due to the added watermark content, but the increase is minimal. Original formatting, fonts, and content are fully preserved.

Can I remove watermarks from PDFs with this tool?

No, this tool is designed to add watermarks to PDFs, not remove them. Watermark removal often requires advanced PDF editing tools and may violate copyright or document security policies. If you need to remove a watermark you previously added, you would need to start with the original unwatermarked PDF file.

What browsers support this PDF watermark tool?

Our PDF watermark tool works on all modern browsers including Google Chrome, Mozilla Firefox, Safari (Mac/iOS), Microsoft Edge, Opera, and Brave. It works on Windows, macOS, Linux, iOS, and Android. We recommend using the latest browser version for best performance. The tool uses modern JavaScript APIs supported by all current browsers.

Can I watermark password-protected PDFs?

You can watermark password-protected PDFs if you've already unlocked them in your browser and the PDF allows editing. If a PDF has editing restrictions or requires a password to modify, you'll need to unlock or decrypt it first. Our tool respects PDF security settings and cannot bypass document protection.

💧 Add Watermark to PDF - Text & QR Code

Add custom text or QR code watermarks to your PDF files with full customization

⚙️ Configure Watermark

📄

Click to upload or drag & drop PDF

Select a PDF file to add watermark

Watermark Type

Watermark Text / QR Code Content

Color

Position

Font Size: 50

📥 Preview & Download

💧

Upload a PDF to get started

Configure your watermark settings and click "Add Watermark"

Your watermarked PDF will be ready for download here

About PDF Watermark Tool

This free online PDF watermark tool allows you to add custom text or QR code watermarks to your PDF documents. Perfect for branding, security, copyright protection, or marking documents as confidential, draft, or samples. Customize every aspect of your watermark including text, color, size, and position. All processing happens in your browser for maximum privacy and security.

Features:

Text Watermarks: Add custom text like "CONFIDENTIAL", "DRAFT", company names, or any text
QR Code Watermarks: Generate and embed QR codes containing URLs, text, or contact information
Custom Positioning: Choose from center, top-left, top-right, bottom-left, or bottom-right positions
Color Customization: Use full RGB color picker to match your branding
Font Size Control: Adjust watermark size from 10 to 100 points with slider
Automatic Rotation: Watermarks are applied at 45-degree diagonal angle for professional appearance
All Pages: Watermark is automatically applied to every page of your PDF
100% Client-Side: All processing happens in your browser - files never uploaded
No Limits: Watermark PDFs of any size with unlimited usage
Quality Preserved: Original PDF quality maintained in watermarked file

How to Add Watermark to PDF:

Upload your PDF file by clicking or dragging it
Choose watermark type: text or QR code
Enter your watermark text or QR code content
Customize color, font size, and position
Click "Add Watermark to PDF"
Download your watermarked PDF file

Common Use Cases:

Add "CONFIDENTIAL" to sensitive business documents
Mark documents as "DRAFT" or "SAMPLE" during review process
Add copyright notices and company branding
Embed QR codes linking to websites or product information
Protect intellectual property with ownership watermarks
Add "COPY" or "NOT FOR DISTRIBUTION" to prevent unauthorized sharing
Brand proposals, reports, and presentations with company names
Add tracking information via QR codes

Watermark Text Examples:

Security: CONFIDENTIAL, PRIVILEGED, INTERNAL USE ONLY, PROPRIETARY
Status: DRAFT, SAMPLE, PREVIEW, REVIEW COPY, NOT FINAL
Distribution: COPY, NOT FOR DISTRIBUTION, ORIGINAL, DUPLICATE
Branding: Your Company Name, Website URL, Contact Info

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💧 Add Watermark to PDF - Text & QR Code

⚙️ Configure Watermark

📥 Preview & Download

About PDF Watermark Tool

Features:

How to Add Watermark to PDF:

Common Use Cases:

Watermark Text Examples:

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