Merge PDF files

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

Drop pdf files here
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How To Merge PDF files Online for Free

1

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

2

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

3

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

4

Download the merged PDF file to your device.

Combine Multiple

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

Fast Merging

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

Secure & Private

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

Preview & Reorder

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

Any Device

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

Cloud-Based

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

Frequently Asked Questions

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.