Overlay & Background PDF Tool

Upload your base PDF document and your overlay PDF. Our tool lets you merge them so that both document contents layer precisely over each other.

It is perfect for imposing standard letterheads, adding massive 'DRAFT' watermarks, stamping logos over entire catalogs, or merging separate foreground/background designs.

For specifically stamping single image files like logos, we highly recommend utilizing our dedicated 'Add Watermark' tool for far finer control.

No, the overlay behaves like placing two transparent sheets of paper over each other without altering either's original text, just the consolidated visual appearance.

Yes! All processing happens without uploading without needing to submit sensitive documents to a vulnerable web server.

While it is not strictly required, having standard matching dimensions (like US Letter to US Letter) yields the best visual alignment, since we center them automatically.

Yes, you generally retain the selectability of text in the generated PDF if the original documents contained text and not just flattened images.

Because we only mathematically layer two existing PDFs, your final document is roughly the combined size of the two uploads.

Usually, the overlay will loop or stamp until the longest document finishes, ensuring full coverage over your entire file.

Absolutely. You can perform as many PDF overlays as your device handles, completely anonymously from us.