Merge PDF files

Drop your pdf files below to merge them into one pdf.

How To Merge PDF files Online for Free

Upload your PDF files by dragging and dropping them into the box.

Arrange the files in the order you want them to appear.

Click the 'Merge PDF' button to start the process.

Download the merged PDF file to your device.

Merge unlimited PDF documents into one single, well-organized file quickly and effortlessly.

No more waiting! Our high-performance engine combines your PDFs in just a few seconds on the fly.

Your files are encrypted using TLS and automatically deleted from our servers after 1 hour of processing.

Upload your PDFs and visually arrange them in the exact order you want them to appear in the final document.

Merge PDFs on the go! Our tool works on Mac, Windows, Linux, and mobile devices via any web browser.

Save your device's resources. All merging processing happens in the cloud with no software installation required.

Is it safe to merge PDFs online?

Yes, PDFonFly uses secure connections (HTTPS) and automatically deletes your files after processing to ensure your privacy.

Can I merge password-protected PDFs?

You need to unlock the protected files first using our 'Unlock PDF' tool before you can merge them.

Is there a limit to how many PDFs I can merge?

Free users can merge up to a certain number of files per day. Check our pricing page for higher limits.

Will merging PDFs affect the quality?

No, our tool combines the files without recalculating any data, so the original quality is perfectly preserved.

Can I reorder pages after uploading?

Yes, you can drag and drop the file thumbnails to rearrange them before clicking merge.