Add Watermark
Add text or image watermarks to your PDF documents online for free. Customize opacity, color, rotation, and position. Secure, client-side processing — files never leave your device.
Upload PDF to Watermark
Add text or image watermarks to your document • Max 100 MB
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Preview (First Page)
Adding watermark to all pages…
Watermark Added Successfully!
Secure & Private Processed locally in browser
No Uploads Files never leave your device
Free Forever No limits, no signups
How to Add a Watermark to Your PDF
- Upload PDF — Drag and drop your PDF file, or click to browse and select it from your device. A preview of the first page will be shown.
- Choose Type — Select "Text" to add custom text watermark, or "Image" to use your own logo/image as a watermark.
- Customize — Adjust the watermark text, font size, color, opacity, rotation angle, and position. For image watermarks, upload your logo and set the scale and opacity.
- Preview — See a real-time preview of how the watermark will appear on your document's first page.
- Apply & Download — Click "Add Watermark & Download" to apply the watermark to every page and save the result.
Why Use Our Watermark Tool?
Watermarking is essential for protecting your intellectual property, marking documents as confidential, or adding professional branding to your PDFs. Our free online watermark tool makes it simple to add custom text or image watermarks without installing any software.
- Text & Image Watermarks — Add custom text in any color, or upload your company logo as an image watermark. Both types support adjustable opacity.
- Live Preview — See exactly how your watermark will look before applying it. The preview updates in real-time as you change settings.
- Precise Controls — Fine-tune the opacity (5%–100%), rotation angle, position (center, corners), font size, and color to get the exact look you want.
- All Pages — The watermark is automatically applied to every page of your document for consistent branding.
- 100% Client-Side — Your PDF is processed entirely in your browser. No files are uploaded to any server, making it safe for confidential documents.
- No Registration Required — Use the tool immediately, as many times as you need. No accounts, no watermarks on the output, no hidden fees.
Common Use Cases
- Marking draft documents as "DRAFT" or "CONFIDENTIAL" before circulation.
- Adding company logos to official documents, reports, and presentations.
- Protecting intellectual property by watermarking ebooks, research papers, or creative works.
- Adding "SAMPLE" or "NOT FOR DISTRIBUTION" text to preview copies.
- Branding documents before sharing with clients or stakeholders.
Privacy & Security
Your documents remain completely private. The watermark tool uses client-side JavaScript processing (pdf-lib library) to modify your PDF entirely within your browser. No data is transmitted to any external server. Once you close the tab, all document data is permanently deleted from memory.
Frequently Asked Questions
What types of watermarks can I add?
You can add text watermarks with custom text, font size, color, opacity, and rotation, or image watermarks using your own logo or image file (PNG or JPG). Both types support adjustable opacity and positioning.
Can I see a preview before applying the watermark?
Yes! A live preview of the first page is shown with the watermark overlay. For text watermarks, the preview updates in real-time as you adjust the text, color, size, opacity, and rotation settings.
Does the watermark apply to all pages?
Yes, the watermark is applied to every page of your PDF document. This ensures consistent branding or confidentiality marking across the entire document.
Can I customize the watermark opacity?
Yes, you can adjust the opacity from 5% to 100% using a slider. Lower opacity values create a subtle, translucent watermark, while higher values make it more prominent.
Is my PDF data secure?
Absolutely. All processing happens entirely in your browser using the pdf-lib library. Your PDF and watermark image are never uploaded to any server.
Can I use a logo as a watermark?
Yes! Switch to the 'Image' tab, upload your logo (PNG or JPG), and adjust the scale and opacity. The image will be centered on each page of your PDF.
What is the maximum file size supported?
We recommend PDFs under 100 MB for optimal performance. Since all processing is done in your browser, the actual limit depends on your device's available memory.