Free · no upload · no sign-up
Merge PDF files
Combine PDFs in the order you want. Free, private, and done in seconds.
Drop your files hereor
PDF · processed on your device, never uploaded
How to merge pdf files
- Drop two or more PDF files into the box above, or click to browse.
- Drag the files into the order you want them combined.
- Click Merge PDFs and download your single combined document.
Your documents stay private. PDF Expert runs entirely in your browser — files are processed on your own device and are never uploaded to a server.
Frequently asked questions
Is it free to merge PDF files?
Yes. Merging PDFs with PDF Expert is completely free, with no file limits, watermarks, or account required.
Are my files uploaded to a server?
No. All merging happens locally in your browser using JavaScript. Your documents never leave your device.
Can I change the order of the files?
Yes. After adding files, drag them up or down in the list to set the exact order before merging.
Is there a limit on file size or count?
There is no hard limit. Because processing happens on your device, very large jobs are limited only by your computer's memory.