Overlay PDF
Put a letterhead, blank form, or stamp behind or over the content of every page, with no upload.
Processed on your device, not uploaded.
How to Overlay Two PDFs
- 1
Choose Both PDFs
Letter in Main Document, letterhead in Overlay Document.
- 2
Set the Layer Position
Background for letterheads, Foreground for stamps.
- 3
Pick the Opacity
100% (Full), 80%, or 50% (Transparent).
- 4
Apply and Download
The result has the same page count as the Main Document.
Overlay PDF Features
One Letterhead on Every Page
The first Overlay Document page goes onto every page of your letter.
Behind or in Front of Content
A letterhead or blank form goes behind the text, a stamp or seal in front.
Page-by-Page Pairing
Paired Pages stacks page 1 on page 1, page 2 on page 2, and so on.
Overlay Fits the Center
The overlay is scaled proportionally and centered on the main page.
Common Questions
Choose Foreground with 50% (Transparent) opacity, then press Apply Overlay. The letter text stays readable.
An overlay stacks one PDF onto another, while Merge PDF adds one file's pages after the other.
Yes, choose Paired Pages. If the two PDFs have different page counts, the Apply Overlay button stays disabled.
Usually the Main Document is a scan with a solid white page. Choose Foreground with 50% (Transparent) opacity.
Yes, both PDFs are stacked in the browser on your phone or computer, not sent to a server.
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