How to merge PDFs

Combine several documents into one file, in exactly the order you choose.

Steps

Open the Merge tab and drag your PDF files in (or click to browse). You can add many at once.
Drag the items in the list to set the order. The top item becomes the first pages of the result.
Click Merge PDFs. A new file downloads automatically.

Your original files are never modified — the tool creates a brand-new PDF.
Files are processed entirely in your browser. Nothing is uploaded, so contracts and personal documents are safe to use.
Password-protected PDFs cannot be read. Open the file with its password in any viewer, save an unlocked copy (e.g. via "Print to PDF"), then merge.
Very large merges are limited only by your device's memory; documents of a few hundred pages are normally fine.