Search
All PDF tools

> pdf merge

Merge PDF

Combine several PDFs into one file. You decide the order.

Choose a PDF

or just drag it here.

.PDF ONLY · STAYS ON YOUR DEVICE

Your files do not leave this device.

How it works
  1. 01Choose PDFs or drag them into the box.
  2. 02Change the order by dragging the handle or with the arrows.
  3. 03Tap “Merge” and download the new file.

Processing happens with JavaScript right in this tab, using the open-source library pdf-lib (MIT license) served from this domain. Your files are not uploaded. When you close the tab, everything is gone. Very large files take a little longer on older phones. The tool does not carry over bookmarks or fillable form fields: what was entered stays visible, but in the new file a field can no longer be filled in. Password-protected PDFs cannot be opened. If you want to mix individual pages, use Organize & rotate.