PDF

PDF merge

Combine multiple PDF files into one. Drag to reorder before merging.

Drop PDF files here or click to browse

Select multiple PDFs — drag to reorder before merging

100% private. All processing happens locally in your browser — no files or data are ever sent to a server.

How to use PDF merge

01 Drag and drop your PDF file(s) onto the upload area, or click to browse
02 Configure any options (page range, output settings) as needed
03 Click the action button to process — your file downloads instantly

Frequently asked questions

Common questions about PDF merge.

Is PDF merge free to use?

Yes, PDF merge is completely free. No account, subscription, or payment is ever required — just open the page and start using it.

Does PDF merge upload my data to a server?

No. PDF merge runs entirely in your web browser using client-side JavaScript. Your files, text, and data never leave your device, making it 100% private.

Can I use PDF merge on my phone or tablet?

Yes. PDF merge is fully responsive and works on all modern smartphones, tablets, and desktop browsers without installing any app.

Are my PDF files kept private?

Absolutely. PDF merge processes your PDF entirely in your browser using pdf-lib, a client-side JavaScript library. Your files are never uploaded to any server.

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About PDF merge

PDF Merge combines multiple PDF files into a single document in the order you specify. It uses pdf-lib, a client-side JavaScript library, to process all files entirely in your browser — your documents never leave your device. Common uses include combining monthly invoices into a single annual report, assembling a portfolio from separate project PDFs, merging scanned document pages, and packaging a multi-part contract into one file for signing and distribution.