pdfDifficulty: 2/5

Merge PDF Files

Combine several PDFs into one document, in the order you choose — entirely in your browser.

Drop PDF files here or click to browsePDF only • up to 20 files • processed locally in your browser

How it works

Add two or more PDF files by dropping them or browsing.
Drag the arrows to put the files in the order you want.
Click Merge PDFs, then download the combined file.

Privacy & Processing: Your PDFs never leave your device. Merging happens entirely in your browser, and nothing is uploaded to a server.

Frequently Asked Questions

Are my PDF files uploaded anywhere?

No. All merging happens locally in your browser using WebAssembly-free JavaScript. Your documents are never transmitted.

How many files can I merge?

Up to 20 PDFs at once, with a combined size of up to 200 MB.

Does merging preserve page order?

Yes. Files are merged in the order shown, and pages within each file keep their original order.

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