Overlay PDF
Overlay or underlay pages from one PDF onto another. Perfect for stamps, letterheads, and layout composition.
点击上传主 PDF
点击上传图层 PDF
About This Tool
Overlay PDF allows you to layer pages of one PDF document on top or underneath another PDF document. It is perfect for applying letterheads, adding background grids, stamping watermarks, or fusing layout drafts together.
Supports both Overlay mode (layer goes on top) and Underlay mode (layer goes underneath). Specify custom target page ranges or loop shorter overlay documents to cover the entire base file automatically.
All processing is executed entirely inside your web browser locally, guaranteeing total security and data privacy.
How to Use
Upload Main PDF
Drag and drop your primary base PDF document.
Upload Layer PDF
Provide the overlay/underlay document that acts as the layer.
Configure Layering
Choose overlay or underlay mode, specify page ranges, and enable page looping.
Compile and Download
Click Compile to process and download the layered result PDF.
Use Cases
Corporate Letterheads
Layer invoice contents on top of standard company letterhead templates.
Watermarks & Seals
Overlay security stamps, signature seals, or backgrounds across documents.
Drawing Blueprints
Combine draft architectures or layout grids underneath text blocks.
Frequently Asked Questions
What is the difference between Overlay and Underlay?
Overlay places the secondary layer on top of your main content. Underlay places it at the very bottom, acting as a background template.
Can I loop the overlay layer?
Yes, if the layer PDF is shorter than the base document, enabling Loop will cycle it (e.g. page 1, 2, 1, 2) to cover all base pages.
Is page range supported?
Yes, you can target specific pages using range syntax such as "1-5", "odd", "even", or comma-separated lists.