Simply drag and drop your PDF files into the upload area, arrange them in your desired order by dragging, then click "Merge PDFs". Your combined PDF will be ready to download instantly.

There's no strict limit. You can merge as many PDFs as you need. Since processing happens in your browser, very large files may be slower on older devices.

Yes, completely. Your files never leave your browser - all processing happens locally on your device. We don't upload or store your documents on any server.