Watermark PDF
Protect or brand your document with a diagonal text stamp like “CONFIDENTIAL” or your logo image, applied to every page at the opacity you choose.
Drop PDF here
or click to browse
Private: files never leave your device
Watermark image (PNG with transparency works best)
Frequently asked questions
Are my PDF files uploaded to a server?
No — this tool runs entirely in your browser using WebAssembly and JavaScript. Your files never leave your device, which also means there are no size limits and no queues.
Can the watermark be removed later?
The watermark is drawn into the page content, so casual removal is not possible. It is not, however, a substitute for redaction — use the Redact tool to permanently remove sensitive content.