https://boiteaoutilsinformatique.fr/en/tools/overlay-pdf/
IT Toolbox
IT Tool

Overlay Two PDFs

Overlay a second PDF on the main document page by page or by repeating its first page, with adjustable opacity.

Tools
PDF · Overlay

Overlay two PDFs

Add a background, letterhead, layer or another PDF over the main document.

The main PDF remains the background; the second document is drawn over it.

Privacy

PDF files stay in your browser. BAOI does not upload documents to its server. For image extraction, PDF.js is loaded from a CDN; only the engine is downloaded.

FAQ

Questions about this tool

What happens to the original file during overlaying PDFs?

Work on a copy and keep the original until the generated PDF has been reviewed. The tool should not become your only source copy.

What should I verify after overlaying PDFs?

Open the result and check page count, order, orientation, dimensions, visual rendering and any links or interactive elements that matter.

Can the operation affect print quality or file size?

Yes. Resizing, compression, conversion and page composition can change dimensions, image quality or file size; compare the output with the intended use.

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