Overlay & stamp PDFs online

Apply a second PDF — letterhead, watermark sheet, form background — on top of or beneath every page of your document in one pass.

How to Overlay & stamp PDFs

1. Step 1. Upload the base PDF document.
2. Step 2. Upload the overlay PDF (letterhead, stamp sheet, background).
3. Step 3. Click Execute to apply the overlay to every page.
4. Step 4. Download the stamped PDF.

Frequently asked questions

Can I add my company letterhead to a PDF?

Yes — create a one-page PDF letterhead and overlay it onto the document; it is applied to every page automatically.

How do I make the overlay appear behind the text?

Design the overlay with transparent regions where the base content should show through; transparent PNGs inside the overlay PDF are respected.

Does the overlay resize to match each page?

The overlay is positioned at each page’s origin — design it at the same page size as your base document for pixel-perfect alignment.