Question 1

What does the Merge PDFs tool do?

Accepted Answer

It combines two or more separate PDF files into a single PDF, in whatever order you choose. This is useful for putting together things like a set of scanned forms, chapters of a report, or invoices into one document.

Question 2

Do my PDFs get uploaded to a server to be merged?

Accepted Answer

No, the merging happens entirely in your browser, so your files stay on your device the whole time. Nothing is transmitted anywhere, which matters if the documents contain sensitive information.

Question 3

Can I change the order the files are combined in?

Accepted Answer

Yes, you can arrange the files in whatever custom order you want before merging, so the final PDF's page order matches your input order rather than being alphabetical or by upload time.

Question 4

What happens if one of my PDFs is password-protected or corrupted?

Accepted Answer

A password-protected PDF will need to be unlocked before it can be merged, since the tool can't read its pages without the password. A corrupted or malformed PDF file may fail to load or be skipped, so it's worth verifying each file opens normally before merging.

Question 5

Is there a limit to how many PDFs I can merge, and is it free?

Accepted Answer

The tool is free with no account needed, but since everything runs in your browser, merging a very large number of files or very large PDFs is limited by your device's available memory rather than an arbitrary cap.

Frequently asked questions about Merge PDFs

What does the Merge PDFs tool do?

Do my PDFs get uploaded to a server to be merged?

Can I change the order the files are combined in?

What happens if one of my PDFs is password-protected or corrupted?

Is there a limit to how many PDFs I can merge, and is it free?