Stamp customized text or confidential status marks across your PDF pages.
Stamp confidential marks and copyright text in 3 quick steps.
Drag & drop the PDF you wish to protect into the upload box above.
Type your custom watermark and adjust transparency to your preference.
Your watermarked PDF is created locally in memory and downloaded instantly.
Files are processed strictly in local browser memory. No data is uploaded or stored on any server.
Watermarks are stamped across all pages in seconds without server queue delays.
We never add third-party advertising or our brand logo to your output documents.
Works on iPhone, Android, Windows, and Mac browsers without requiring software installation.
Our tool embeds text layers and vector rotation transformations directly into your document inside browser memory using WebAssembly. Your files are never uploaded or transmitted to any server.
Yes. You can write any customized text (such as CONFIDENTIAL, DRAFT, COPY, or your company name) and adjust the opacity slider to ensure the watermark remains clearly visible without obscuring underlying text.
Yes. The watermark is automatically stamped across every single page of your document at a diagonal angle, centered perfectly on each page canvas.
Absolutely. Because all processing executes 100% in your device memory (RAM), no document content, text, or file data is ever stored, analyzed, or sent to external servers.
If a PDF document has an active open password, you need to unlock it first before applying watermarks so the page elements can be accessed.
No. The watermark is rendered as a vector typography overlay. Original high-resolution images, document fonts, and vector paths remain untouched.