Merge multiple PDF files into one

To merge PDFs online: upload your files, arrange them in the desired order, then start the merge. In a few seconds you’ll get a single combined PDF ready to download. Fast, free, no sign-up.

Steps (show)

Upload your PDF files.
Reorder them if needed.
Click “Merge PDFs”.
The result downloads automatically.

Choose a file or drag it here
and drop it

Merging…

A simple, fast and secure tool to merge your PDFs

Difyzi’s PDF merger lets you combine multiple documents into a single file with no quality loss.
It runs entirely online, requires no sign-up, and protects your data: files are not kept on the server after download.
Whether you’re on desktop or mobile, our PDF merge tool is ideal to save time and stay organized.

Frequently asked questions

As many as you want within reasonable browser limits. For best performance, avoid merging hundreds of very large files at once.

Yes. Drag each file in the list to change its order before starting the merge.

Yes, merging combines your PDFs without aggressive recompression. The original quality is preserved.

No. Files are processed securely and deleted after the operation. Nothing is kept longer than necessary.

The tool is free. Technical limits may apply depending on file size/quantity and your device’s capabilities.