# How to Merge PDF
Upload Files
Select or drag and drop the PDF files you want to merge.
Reorder
Drag the files to arrange them in your desired order.
Merge & Download
Click 'Merge PDFs' to combine them instantly and download the result.
# Why use Andromeda PDF?
100% Free
No hidden costs, watermarks, or file limits.
Secure Processing
Files are processed in your browser and never uploaded to a server.
Universal Compatibility
Works on Windows, Mac, Linux, and mobile devices.
Frequently Asked Questions
Is it safe to merge sensitive documents?
Yes! Since all processing happens on your device, your files never leave your computer.
How many files can I merge?
You can merge as many files as your browser memory allows, typically dozens at a time.