PDF and documents
PDF Watermark Tool
Add draft, confidential, or brand text to documents
🔒 All data is processed in your browser. Nothing is uploaded to any server.
Quick guide
What can PDF Watermark help you do?
Free PDF watermark tool. Add a text watermark with custom size and opacity. Browser-based, no upload.
Best for
PDF Watermark is made for quick image, PDF, thumbnail, and social-media file work before sharing or publishing. It is handy when you need a clean result without a heavy editor.
How to use it
For PDF Watermark, enter the URL or text, choose colors and sizes, or upload the file the tool asks for. Review the preview before downloading or copying the result.
How to read the result
After using PDF Watermark, before downloading or copying, check dimensions, clarity, file size, page order, and text placement. For websites or social posts, make sure the filename and purpose are clear.
Privacy and limits
When using PDF Watermark, image, PDF, and visual asset work is handled mainly in the browser with no sign-in. Very large PDFs, videos, or high-resolution images may be limited by device memory.
For PDF Watermark: Only process material you have the right to use. If it contains IDs, addresses, contracts, faces, or unpublished brand assets, review redaction and permissions before sharing.
Frequently Asked Questions
Does it change my original file?
No. A new watermarked PDF is generated.
Is my PDF uploaded?
No. Everything runs in your browser.