PDF Merger — Free Online Tool

Combine multiple PDF files into a single document in seconds. Reorder pages with a tap — everything happens locally in your browser.

Your files

No PDFs added yet — drop some files above to get started.

100% private — files never leave your device

No sign-up needed

Free forever

How it works

1Add PDFs — drop or browse for the files you want to combine.

2Reorder — use the up / down arrows to set the exact page order.

3Merge — hit Merge PDFs and your combined file downloads instantly.

100% private

Your PDFs never leave your device. No uploads, no servers, no tracking.

Reorder freely

Move any file up or down before merging — the merge order follows your list exactly.

Instant & free

No sign-up, no watermarks, no limits. Just merge and download.

Frequently asked questions

Are my PDF files uploaded to a server?

No. Merging happens entirely inside your browser using a client-side PDF library. Your files never leave your device — not even temporarily.

How do I change the order of the merged pages?

After adding your PDFs, use the up and down arrow buttons on each file row. The files are merged in exactly the order shown in your list.

Is there a limit on the number or size of PDFs?

There's no hard limit — but very large files are processed in your browser's memory, so merging dozens of huge PDFs may be slower or run into your device's memory. For typical documents it just works.