Combine several PDFs into one file, privately, in your browser.
Combine several PDF files into one. Drop in the files, put them in order with the up and down buttons, and download a single merged.pdf with every page of every file in that order. Each file shows a small preview of its first page, its page count and its size, and you can keep adding files to the end of the list at any time.
The files are read and joined by JavaScript on your own device. Nothing is uploaded, which is the point when the PDFs are signed contracts, ID scans, tax forms or bank statements. A password-protected file is refused with a clear message instead of being turned into a broken output.
With this tool, yes, because the files never leave your device. The merge runs in your browser, so there is no upload, no server copy and nothing to delete afterward. Once you have added your first file, you can even disconnect from the network and it keeps working.
Use the up and down arrows on each row. The merged file follows the list from top to bottom, and every page of each file is kept in its original order.
It is either password-protected (or encrypted with editing restrictions) or damaged. Encrypted files cannot be rewritten without the password, so remove the protection in the app that made the file, or print it to a new PDF, and add it again.
There is no fixed limit. Everything is held in your browser's memory, so very large merges depend on your device; a few hundred pages is comfortable on a typical laptop.
Every calculation happens on this page, in your own browser. Your input is never sent to a server and never logged, which also means the tool keeps working when you are offline.