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PDFWatermark

💧 PDF Watermark

Upload a PDF and add custom text watermarks to every page.

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Click or drag a PDF file here

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FAQ

How It Works

This PDF watermark tool is built on the OpenDataLoader open-source local PDF parsing engine. All file processing is performed offline in your browser.

1. Local Batch PDF Parsing: Batch reads all pages, text, and image resources from all uploaded PDFs, loading all document data into browser local memory.

2. Watermark Layer Generation: Generates watermark layers input interactions, updates the order of all PDF files in real time, allowing free customization of the document stitching sequence.

3. Layer Overlay & Export & Watermark: Overlays watermark layers onto transform to every page of each PDF according to the user-defined file order, standardizing page sizes and layer structures into a single complete PDF data stream.

4. Local Watermarkd PDF Export: After all watermarks are applied and reassembled, a new watermarked watermarkd PDF file is generated locally in the browser. One-click download without modifying any original PDF.