Stamp text or image watermarks on your PDF documents in seconds. Customize typography, transparency, position, rotation, and more. 100% free - no registration required!
Your files are processed locally in your browser - they never leave your device. Complete privacy guaranteed.
or drag and drop PDF files here
Supports: PDF files up to 100MB | Multiple files supported for batch watermarking
Your PDF files are processed entirely in your browser. No files are uploaded to any server. Complete privacy guaranteed for all your sensitive documents.
Add watermarks to PDF files in seconds. No waiting, no queues. Get your watermarked PDF immediately without any delays.
No hidden costs, no subscription, no registration required. Use unlimited times for free forever. No credit card needed.
Control every aspect: text, font, color, size, opacity, position, rotation. Create the perfect watermark for any purpose.
Watermark multiple PDF files at once. Save time with our batch processing feature for high-volume document management.
Use on any device - desktop, laptop, tablet, or smartphone. Works on all modern browsers including Chrome, Firefox, Safari, and Edge.
Discover how professionals use watermarks to protect and brand their PDF documents
Mark sensitive business documents with "CONFIDENTIAL", "INTERNAL USE ONLY", or "RESTRICTED" to prevent unauthorized sharing and protect proprietary information.
Add "DRAFT" or "FOR REVIEW ONLY" watermarks to documents that are not yet finalized. This prevents confusion and ensures recipients know the document status.
Protect your intellectual property by adding copyright notices, author names, or "© 2024 Your Company" watermarks to prevent unauthorized reproduction.
Add your company logo to all PDF documents for professional branding and corporate identity. Perfect for reports, proposals, and official communications.
Mark preview or sample documents with "SAMPLE" or "PREVIEW" to indicate they're not the final version. Commonly used for product catalogs and portfolios.
Add date-based watermarks like "Valid Until Dec 2024" or "EXPIRED" for time-sensitive documents, contracts, and certifications.
Follow these simple steps to add professional watermarks to your PDF documents
Click on the "Upload PDF from Computer" button or simply drag and drop your PDF file into the upload area. Our free PDF watermark tool supports:
Select the type of watermark you want to add to your PDF documents:
Perfect for adding copyright notices (© 2024 Company Name), confidential stamps (CONFIDENTIAL, DRAFT, INTERNAL USE ONLY), or custom text messages. Fully customizable with different fonts, sizes, and colors.
Ideal for adding company logos, signatures, stamps, or any image-based branding to your PDF documents. Supports PNG (with transparency), JPG, and JPEG formats.
If you selected text watermark, you have full control over these customization options:
For image watermarks, follow these steps to add your logo or custom image:
Choose exactly where and how your watermark should appear on the pages:
Center position is most common for "CONFIDENTIAL" stamps, while corners are popular for logos.
Specify which pages should receive the watermark for precise control:
This is useful when you only want to watermark specific sections of your document, such as only the first page, cover pages, or pages 1-5.
Decide whether the watermark should appear above or below the existing content:
Watermark is placed on top of existing text and images. Recommended for most security watermarks as it's more visible and harder to remove.
Watermark is placed behind existing content. Useful for subtle background patterns or when you don't want to obscure text.
Click the "ADD WATERMARK TO PDF" button to start processing. Here's what happens:
Processing Time: Typically just a few seconds, depending on file size and number of pages.
Find answers to common questions about adding watermarks to PDF files
To add a watermark to PDF for free using All In One Free Tools: 1) Visit our PDF Watermark tool, 2) Upload your PDF file by clicking "Upload" or drag-and-drop, 3) Choose text or image watermark, 4) Customize the position, opacity, color, and rotation, 5) Click "Add Watermark" button, 6) Your watermarked PDF will automatically download. It's 100% free with no registration or email required.
Yes! Our PDF watermark tool fully supports image watermarks including company logos, signatures, stamps, and custom graphics. Simply click the "Image/Logo Watermark" tab, upload your image (PNG, JPG, or JPEG format), and adjust the transparency. PNG images with transparent backgrounds are recommended for the best professional results.
Absolutely! Your PDF files are 100% secure because all processing happens directly in your web browser using JavaScript (pdf-lib). Your files are NEVER uploaded to any server. Everything stays on your local device, ensuring complete privacy and security. This client-side processing is the safest way to handle sensitive documents online.
Yes, you can specify a custom page range for watermarking. Use the "From Page" and "To Page" input fields to define which pages should receive the watermark. For example, set From: 1 and To: 5 to only watermark the first five pages. Leave "To Page" at a high number (like 999) to watermark all pages in the document.
Our PDF watermark tool offers 9 position options in a 3x3 grid: top-left, top-center, top-right, middle-left, center, middle-right, bottom-left, bottom-center, and bottom-right. Additionally, you can rotate your watermark at 0°, 45°, 90°, 180°, or 270° angles. The 45° diagonal rotation is especially popular for "CONFIDENTIAL" or "DRAFT" stamps.
Yes, our tool supports batch watermarking! You can upload multiple PDF files simultaneously, configure your watermark settings once, and apply the same watermark to all files. Each watermarked PDF will be processed and downloaded separately with "_watermarked" added to the filename.
Use the opacity/transparency slider in our tool to control watermark visibility. Slide towards 0% for more transparency (nearly invisible) or towards 100% for full opacity (completely solid). For subtle background watermarks, 20-40% opacity works best. For visible but non-intrusive watermarks, use 40-60%. For prominent security stamps, use 70-100% opacity.
For confidential documents, we recommend: 1) Text watermarks like "CONFIDENTIAL", "INTERNAL USE ONLY", "RESTRICTED", or "DO NOT DISTRIBUTE". 2) Position: Center of the page. 3) Rotation: 45° diagonal for maximum coverage. 4) Color: Red (#FF0000) or dark gray (#333333) for visibility. 5) Opacity: 50-70% so it's clearly visible but doesn't obscure content completely. 6) Font size: 48-72pt for standard letter/A4 pages.
Yes! Our PDF watermark tool is fully responsive and works on all devices including smartphones, tablets, laptops, and desktop computers. It works on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera on both iOS and Android devices. No app installation required - just open in your browser and start watermarking your PDFs.
"Over the PDF content" (Foreground) places the watermark on top of existing text and images. This is recommended for security watermarks as it's more visible and harder to remove. "Below the PDF content" (Background) places the watermark behind existing content, which is useful for subtle background branding or when you want text to remain easily readable without any overlay.
Our PDF watermark tool supports PNG, JPG, and JPEG image formats for watermarks. PNG format is highly recommended because it supports transparent backgrounds, allowing your logo or image to blend seamlessly with the PDF content without any white box around it. JPG/JPEG images work well for photographs or images where transparency isn't needed.
This tool is specifically designed for adding watermarks to PDFs, not removing them. Watermark removal would require a different type of tool. However, keep in mind that watermarks are often added to protect intellectual property, so removing watermarks from documents you don't own may violate copyright laws.
No, there are no limits! You can watermark unlimited PDF files completely free. Since all processing happens locally in your browser, there are no server-side restrictions. Use our tool as many times as you need for personal, business, or commercial purposes without any costs or registration.
Explore more free PDF tools from All In One Free Tools
100% Free • No Registration • Unlimited Use • Complete Privacy • Works on All Devices
Join 500,000+ users who trust All In One Free Tools for their PDF needs
The All In One Free Tools PDF Watermark Add tool is your ultimate solution for adding professional watermarks to PDF documents online. Whether you need to protect confidential business documents, add copyright notices to your creative work, brand corporate materials with your company logo, or mark draft documents before review - our free tool handles it all with ease.
Unlike other online PDF watermark tools that upload your files to remote servers, our tool processes everything 100% locally in your browser. This means your sensitive documents never leave your device, ensuring complete privacy and security. We use the powerful pdf-lib JavaScript library to manipulate PDFs directly in your browser - no server uploads, no data retention, no privacy concerns.
Our PDF watermark tool is perfect for:
Our comprehensive PDF watermark tool offers extensive customization options including:
Try our free PDF watermark tool now - no registration, no email required, no limits!