How many PDFs can I merge at once?

As many as you like. Add more files at any time with "+ Add more files" before merging.

Can I merge password-protected PDFs?

Unlock them first with the Unlock PDF tool (you need the password), then merge the unlocked copies.

Are my files uploaded to a server?

No. This tool runs entirely in your browser using JavaScript, so your files never leave your device and nothing is stored on our servers. It even keeps working if you go offline after the page has loaded.

Merge PDF

Every PDF task.
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Merge PDFs

Combine several PDFs into one, in the order you choose.

Drop PDFs here

or browse files · processed on your device

To merge PDFs, add two or more PDF files, put them in the order you want with the arrows, and press Merge PDFs. A single combined PDF downloads immediately — the files are joined in your browser, not uploaded.

How to merge PDF files

Drop your PDFs into the box above or click to choose them.
Use the ↑ ↓ arrows to set the order, or choose "By name" to sort alphabetically.
Press Merge PDFs. The combined file downloads as merged.pdf.

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Frequently asked questions

How many PDFs can I merge at once?: As many as you like. Add more files at any time with "+ Add more files" before merging.
Can I merge password-protected PDFs?: Unlock them first with the Unlock PDF tool (you need the password), then merge the unlocked copies.
Are my files uploaded to a server?: No. This tool runs entirely in your browser using JavaScript, so your files never leave your device and nothing is stored on our servers. It even keeps working if you go offline after the page has loaded.