Merge PDF

Combine multiple PDF files into one, in the order you add them.

  • Reorder or remove files before merging
  • Nothing stored, nothing to delete

Select files to merge

or drop PDF files here.

Fast, secure merging.

How to merge PDF files

  1. Add your PDFs. Select them or drop them onto the page. You can add more files at any point.
  2. Set the order. Pages appear in the order the files are listed, so reorder or remove files before you merge.
  3. Merge. Click Merge into one PDF. It usually takes a second or two.
  4. Download. Save merged.pdf. Nothing is kept on our side.

Tips for a clean merge

  • Number your files first (01-cover.pdf, 02-statement.pdf…) so the order is obvious when you add them.
  • Check page orientation. A sideways scan stays sideways after merging. Fix it first with Rearrange PDF, which can rotate individual pages.
  • Only need some pages? Pull them out with Split PDF (for example 1-3,5), then merge the pieces.
  • Expect the size to add up. Merging copies the pages as they are, so the new file is roughly the sum of the originals. If it is too big to email, run it through Compress PDF afterwards.
  • Password-protected files have to be unlocked first with Unlock PDF.

Is it private?

Yes. Merging runs entirely in your browser: your device reads the files, combines the pages and builds the new PDF in memory, and your files are never uploaded. (The first time you merge, your browser downloads the open-source PDF library that does the work — that is code, not your files.) You can check this yourself: open your browser's developer tools, watch the Network tab while you merge, and you'll see no upload of your PDFs. Our guide on how to merge, split and compress PDFs without uploading them shows exactly how.

Limits

Free accounts, and visitors without an account, can merge up to 5 PDFs at a time. Pro raises that to 100. Because everything happens on your device, very large files depend on your device's memory.

Frequently asked questions

Does merging reduce the quality of my PDFs?

No. The pages are copied into the new document as they are — nothing is re-rendered or re-compressed — so text stays sharp and images keep their original quality.

Can I merge images with PDFs?

This tool combines PDFs. To turn photos or scans into a PDF, use Image to PDF first, then merge the result with your other documents.

Why can't I add a PDF that needs a password?

The tool can't read pages it has no permission to open. Unlock the file with Unlock PDF (you need to know the password), then merge it.

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