Combine multiple PDF files into one — in the order you add them. Everything runs in your browser; nothing is uploaded.
Add two or more PDF files using the box above. They merge in the order listed — use the ✕ to remove any file, or re-add files to change the order. Click Merge & download to get a single combined PDF.
Yes. The merge happens entirely in your browser using the open-source pdf-lib library. Your files are never uploaded to a server.
There's no hard limit, but very large files are constrained by your device's memory since all processing is local.