Watermark PDF
Secure your documents with visual bitstream identification. 100% Local Processing.
Capture Source PDF
Click or drag your document here to begin the branding sequence.
Map Dictionary
Select your PDF. Our engine creates a visual catalog of every document layer instantly in local RAM.
Define Mark
Input text or upload a PNG logo. Adjust opacity, scale, and rotation with molten precision.
Configure Range
Apply the watermark to all pages, specific intervals, or a manual selection of indices.
Embed Bitstream
We physically rewrite the PDF content streams to integrate your mark at the structural level.
Pure structural embedding
Unlike standard editors that simply place an image "on top" of a PDF, ZeplixTools performs a physical bitstream rewrite. We integrate the watermark into the page's content stream dictionary, ensuring the mark is persistent and compatible with all industrial PDF viewers and physical printing hardware.