Merge PDF files
Combine PDFs into one document. Drag to set the order.
or drop them here · paste with Ctrl+V
Processed on your device — files are never uploaded
to use this tool — every tool is free, with no daily limit.
Why use FilesForU's Merge PDF tool
Combine multiple PDFs into one file in the order you want.
Free, no watermark
Merge PDF is free with a free account — no daily limit and no watermark on your files.
Private
Your files are processed on your own device. They are never uploaded to our servers.
Fast
No upload and no queue, so most files are ready in seconds.
Works everywhere
Use it on Windows, Mac, Linux, iPhone or Android — nothing to install.
How to use Merge PDF
- 1
Add two or more PDF files
- 2
Drag the files into the order you want
- 3
Click Merge and download your PDF
Questions & answers
How many PDFs can I merge at once?
As many as your device can handle. Most computers merge dozens of files and hundreds of pages in a few seconds.
Will the quality change?
No. Pages are copied exactly, so text stays selectable and images keep their original quality.
Can I merge password-protected PDFs?
Locked files need to be unlocked first. We'll tell you which file is locked.
Are my files uploaded to your server?
No. This tool runs entirely inside your browser, so your files stay on your device. FilesForU never receives, stores or sees them.
Is it really free?
Yes. Every tool is free with a free account — no daily limit, no watermarks, and files up to 500 MB.