PDF Merge joins several PDF files into one document while keeping your files on your device. Select the PDFs you want to combine, arrange them in order, and download the merged result. Powered by pdf-lib and running entirely client-side, so confidential documents are never sent to a server.
Your data is processed entirely in your browser. Nothing is uploaded to any server.
Yes, all PDF tools are free and run in your browser.
No. Your PDFs are processed locally on your device and never leave it.
Very large files may be slower because processing happens on your device, but there is no hard upload limit.
No account or signup is required.