PDF overlay tool

Overlay text, images, or merge multiple PDF files with precise positioning controls

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5,948+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

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About This Tool

This PDF overlay tool allows you to combine multiple PDF files or overlay text and images onto existing PDF documents. You can upload base PDFs and overlay PDFs, then position the overlay content with pixel-perfect accuracy. The tool supports text overlays with custom fonts, sizes, and colors, as well as image overlays for watermarks or stamps. All processing happens securely in your browser with no file uploads to external servers.

Save your calculation history with a free account

How to Use

Upload your base PDF file
Choose overlay type: another PDF, text, or image
Configure overlay position, size, and opacity
Preview the result
Download the merged PDF

Frequently Asked Questions

Find Quick Answers

Is my PDF data secure?

Yes, all processing happens entirely in your browser using JavaScript. No files are uploaded to any server.

What file formats are supported for overlays?

You can overlay PDF files, PNG images, JPEG images, or add text directly. The output is always a PDF file.

Can I adjust the opacity of overlays?

Yes, you can set transparency from 0% (fully transparent) to 100% (fully opaque) for both image and PDF overlays.

What are the file size limits?

There are no artificial limits, but very large files may take longer to process depending on your device's memory.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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