Add Watermark to PDF
Add a diagonal text watermark to every page of your PDF. Customize text, opacity, and size — all done in your browser.
💧
Click or drag a PDF here
Files are processed locally — never uploaded to any server
Preview
CONFIDENTIAL
Your files are never uploaded. All processing happens in your browser.
How to Use
- 1
Upload your PDF
Click to upload the PDF you want to watermark.
- 2
Enter watermark text
Type your watermark text and choose size, color, and opacity.
- 3
Download
Click Apply Watermark to download the watermarked PDF.
How It Works
This tool adds a diagonal text watermark to every page of a PDF — customizable text, opacity, and size — commonly used to mark documents as drafts, confidential, or attributed to a specific owner before sharing.
Why diagonal and semi-transparent
A diagonal watermark across the page is harder to crop out than one placed in a corner, and reduced opacity keeps the underlying document content fully readable while still clearly marking the page — the standard convention for document watermarking used across most professional PDF tools.
Examples
Marking a draft document
Adding "DRAFT" at 20% opacity across every page of a document still under review, so anyone who receives it understands it isn't the final version.
Protecting shared confidential content
Adding your company name or "CONFIDENTIAL" as a watermark before sharing a sensitive proposal externally, making unauthorized redistribution more visibly traceable.
Common Use Cases
- Marking draft or in-review documents so recipients don't mistake them for final versions
- Adding confidentiality or ownership marks before sharing sensitive documents externally
- Branding a document with a company name or logo text before distribution
Tips
- Lower opacity (around 10-20%) keeps a watermark visible but unobtrusive for documents meant to still be easily read; higher opacity is more appropriate when the watermark itself is meant to be a strong deterrent against reuse.
- A text watermark alone doesn't prevent copying or editing — pair it with the Protect PDF tool if you also need to restrict who can open or edit the file itself.
Frequently Asked Questions
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