Smartooly

Merge PDF

Combine PDFs into one file, in order.

100% freeRuns in your browserFiles never leave your device
Add PDF files or drop them here

Combine two or more PDF files into a single document. Drag to reorder pages, then download — everything happens in your browser, so your files never leave your device.

How to use it

  1. 1Drop your PDF files into the box, or click to browse.
  2. 2Drag the files to put them in the order you want.
  3. 3Click Merge PDF and download the combined file.

Frequently asked questions

Are my files uploaded to a server?+

No. Merging runs entirely in your browser using WebAssembly, so your PDFs never leave your device.

Is there a limit on the number of files?+

There is no hard limit. Very large batches depend on your device's available memory.

Does it work on mobile?+

Yes. It works in any modern mobile or desktop browser without installing anything.