PDF Overlay

Overlay or underlay pages from one PDF onto another.

Upload base PDF

Upload overlay/underlay PDF

Your files never leave your device.

How It Works

1

Upload Two PDFs

Upload your base PDF and the PDF you want to overlay or underlay.

2

Choose Mode

Select overlay (on top) or underlay (behind). Optionally set a page range and repeat.

3

Download

Download your PDF with the overlay or underlay applied.

Frequently Asked Questions

What is the difference between overlay and underlay?

Overlay places pages on top of your base PDF (like a watermark). Underlay places pages behind your base PDF (like a letterhead or background).

Can I use a single-page PDF as overlay for all pages?

Yes! Enable the "Loop" option and your overlay PDF pages will repeat across all base pages. A single-page watermark will apply to every page.

Are my files private and secure?

Absolutely! All processing happens in your browser. Your files never leave your device, ensuring complete privacy.