Add Watermark
Add custom text watermarks to your PDF files online. Mark documents for branding, ownership, or internal use in just a few clicks.
Upload a PDF to watermark
Add a centered diagonal text watermark to each page. Files are stored temporarily for processing; download the result promptly.
Drag and drop a file here, or click to browse.
Watch: How to Add a Watermark to a PDF Online
This short video shows how to upload a PDF, enter custom watermark text, apply the watermark, and download the finished file using PDF Toolbox Online.
How to Add a Custom Watermark to Your PDF Online
Add a visible label that communicates document status, ownership, or branding. The tool places the same custom text watermark on each page of the uploaded PDF; review the result to confirm that it fits the page design.
Upload PDF
Choose one PDF from your device and wait for the upload to complete.
Customize Text
Type up to 60 characters, such as 'CONFIDENTIAL', 'DRAFT', or your company name.
Stamp & Export
Download the updated PDF with the watermark added to each page, then inspect the result.
Using Visual Labels for Ownership and Document Status
A visible watermark can communicate ownership, review status, or intended audience. By placing semi-transparent text over each PDF page, you create a visual notice that travels with the exported file. A watermark is not access control, proof of ownership, or a guarantee against copying or removal.
For businesses, this is vital for brand integrity. Whether you are sending a proposal to a potential client or distributing internal training manuals, a watermark can keep your company name visible on the shared pages. It can also help manage document versions by clearly labeling files as "Draft," "Review Only," or "Final Version."
Common Scenarios for PDF Watermarking
Visual identification is essential across various industries. Here is how professionals use our Add Watermark tool:
- Labeling legal evidence as 'Exhibit A' or 'Confidential'
- Adding ownership labels to creative portfolios and contact sheets
- Marking financial invoices as 'PAID' or 'PENDING'
- Stamping eBooks and whitepapers with author names
- Differentiating between 'Client Copy' and 'Internal Copy'
- Indicating 'Limited Distribution' on sensitive government reports
Want to hide the technical details of who created the file? Run your PDF through our Remove Metadata tool after watermarking to remove the metadata fields that tool supports.
Temporary Server-Based Processing
Files submitted to this tool are transferred over HTTPS and processed on the server to create the watermarked PDF. HTTPS protects the transfer in transit, but it is not end-to-end encryption because the server must read the uploaded file to perform the operation.
Uploaded and watermarked PDFs are intended to be temporary. Download the result promptly and retain the original until you have reviewed it. The service does not guarantee deletion at an exact minute because operational failures or maintenance can delay automated cleanup.
Build a More Robust PDF Workflow
A watermark is a visual notice rather than a complete security control. If you also need an opening password, you can use the Protect PDF tool. Password protection can restrict opening the PDF in compatible readers, but it does not guarantee that an authorized recipient cannot copy or redistribute the content.
In a typical workflow, you may need to merge PDF files into one document, then compress PDF copies for easier sharing. If only certain sections are needed, you can split PDF pages before distribution.
FAQ
How do I add a 'Confidential' or 'Draft' stamp to my PDF?
Upload one PDF and enter text such as 'Confidential', 'Draft', or a company name. The tool adds the text as a centered diagonal watermark on each page and creates a new PDF for download.
Will the watermark cover up the text in my PDF?
The watermark uses a light gray, semi-transparent style intended to leave the underlying page visible. Readability depends on the page design and watermark text, so review the downloaded PDF before distributing it.
Can I customize the watermark text, position, or font?
You can customize the text, up to 60 characters. The current tool uses a fixed centered, diagonal placement with a gray Helvetica-style font and preset transparency. It does not currently provide controls for font, color, position, angle, or opacity.
How are files handled while a watermark is added?
The PDF is uploaded over HTTPS and processed on the server. Uploaded files and generated outputs are stored temporarily for processing and download. Download the result promptly and use an organization-approved workflow for documents that require special handling.
Can I watermark multiple PDF files at once?
No. The current watermark tool accepts one PDF at a time. Process and download each document separately.
Can I still edit or protect the PDF after a watermark is added?
The downloaded result is a standard PDF and can generally be used with the site's other tools. You can add an opening password with Protect PDF or use Remove Metadata to remove supported document metadata. Review each output because compatibility and metadata removal can vary by file.