KOEN

Merge PDF

PDF · MERGE

Combine multiple PDFs into one. Drag to set the order, pick page ranges for each file and download, all in your browser with nothing uploaded.

Your files are processed right here in your browser. Nothing is uploaded or stored on a server.pdf-lib (MIT) · pdf.js (Apache-2.0)

HOW TO

How to use

  1. Drop your PDFs onto the page or click Choose PDFs. You can add several at once.
  2. Drag the cards (or use the ← → buttons) to set the merge order.
  3. To include only some pages from a file, type a range such as 1-3, 5 under that card.
  4. Name the file and press Merge PDF to download the combined document.
PAIRS WELL WITH

Pairs well with

FAQ

FAQ

Are my files uploaded?

No. Everything happens inside your browser. Your files are never sent to a server, and closing the tab clears your work.

Is there a limit on file count or size?

There's no fixed limit, but processing uses your browser's memory. Very large files (hundreds of MB) may be slow or fail, so try merging them in smaller batches.

Can I merge password-protected PDFs?

No. Encrypted or secured PDFs aren't opened. Remove the password in the original app first.

Can I add pages in reverse order?

Yes. Type a range like 5-1 and the pages are added in that order. Reverse order flips the order of the files.