Add Watermark
Insert text or image watermarks to protect your documents
Add Watermark to PDF Online
Add a watermark to your PDF files quickly using our simple and secure Add Watermark tool. ConvertPDF.ai helps you insert text or image watermarks into your documents to protect your content and show ownership. Whether you want to add a "Confidential" label, company logo, copyright notice, or custom branding, our online PDF converter makes the process fast and easy. Watermarks help prevent unauthorized use and clearly mark your documents as official, private, or branded. You can customize the watermark and download your updated PDF in just a few clicks.
How to Add a Watermark to a PDF
Simple steps to get your converted file
Upload Your PDF
Select the PDF file where you want to add a watermark.
Add Text or Image Watermark
Choose whether to add a text watermark (like "Confidential" or your company name) or upload an image such as your logo. Adjust size, position, and transparency as needed.
Download Watermarked PDF
Download your updated PDF file instantly and use or share it safely.
Key Features of Our Add Watermark Tool
Add Text Watermark
Insert custom text watermarks with adjustable font size, color, and transparency.
Add Image Watermark
Upload your logo or image and place it anywhere on the PDF pages.
Full Page or Selected Pages
Apply the watermark to all pages or selected pages only.
Adjustable Position & Opacity
Control the watermark position and transparency to match your needs.
Fast & Reliable Processing
Our online PDF converter adds watermarks in seconds.
Secure File Handling
Your files are processed securely and deleted automatically after editing.
Ready to convert your files?
No installation required. No complicated settings. Just upload and convert.
Frequently Asked Questions
Everything you need to know about this tool
Upload your PDF file, choose text or image watermark, customize it, and download the updated file. Basic usage is available for free with certain limits.
Yes. You can upload your logo image and use it as a watermark on your PDF.
Yes. You can control the opacity to make the watermark light or bold.
No. The original text, images, and layout remain unchanged. The watermark is added as an overlay.
Yes. ConvertPDF.ai handles files securely and deletes them automatically after processing.