PDF Merge
Combine multiple PDF files into one, in the order you choose.
Unlike our other tools, your PDFs are uploaded to merge them. They're processed in memory and never written to disk on our server.
This tool is temporarily unavailable.
Please check back later.
How to use this tool
- 1Choose two or more PDF files.
- 2Reorder them with the up/down arrows — they’re merged in that order.
- 3Click Merge PDFs, then download the combined file.
Features
- Combine any number of PDFs into one file.
- Reorder files before merging.
- No account or sign-up required.
Privacy
Unlike our client-side tools, merging requires uploading your PDFs so the server can combine them — they’re processed in memory only and are never written to disk or kept after the response is sent.
Frequently asked questions
Is this PDF merge tool free?
Yes, and there is no limit on how many times you can use it.
How many PDFs can I merge at once?
Up to 20 files per merge, each up to 20MB.
Why does this tool need to upload my files, unlike most tools on this site?
Merging PDFs reliably needs a PDF-parsing library that only runs server-side in this project (see the Privacy note above) — most tools here run entirely in your browser, but this one can’t.
Are my files stored after merging?
No. Your PDFs are processed in memory for this one request and never saved to disk.