Question 1

How do I merge PDF files online for free?

Accepted Answer

Upload your PDF files, reorder them using the arrows, then click Merge PDFs. Your merged file downloads instantly — no signup required.

Question 2

Is there a file size limit for merging PDFs?

Accepted Answer

There is no hard size cap. Large files may take a few seconds but are handled entirely in your browser.

Question 3

Are my PDF files uploaded to a server?

Accepted Answer

No. All merging happens in your browser using PDF-lib. Your files never leave your device.

Question 4

How many PDF files can I merge at once?

Accepted Answer

There is no limit. Add as many PDFs as you need and reorder them before merging.

Question 5

Can I merge password-protected PDFs?

Accepted Answer

Unlock them first with the Unlock PDF tool, then merge the unlocked files.

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