How to merge PDF files
- 01
Add your PDFs
Drop them in or pick them from your files. Add as many as you need.
- 02
Put them in order
Drag files into place, use the arrows, or sort them by name.
- 03
Merge and download
Get one PDF, with a bookmark for each original file if you want it.
Questions
Are my files uploaded anywhere?
No. LocalPDF runs entirely in your browser: files are read from your disk, processed on your device and saved straight back. Nothing is sent to a server, and once the page has loaded it keeps working with your internet connection switched off.
Will links, bookmarks and forms still work?
Yes. Links and bookmarks are re-pointed to their pages in the merged file, and form fields stay fillable. If two files have a field with the same name, the second is renamed so filling one doesn’t fill the other. Page labels and layers carry over too.
How many files can I merge?
There’s no fixed limit on files or pages. Everything happens in your browser’s memory, so the practical ceiling is your device; a few hundred pages is quick on any recent computer or phone.
Does it work with password-protected PDFs?
Not yet. Encrypted PDFs are turned away with a message rather than producing a broken file. Remove the protection in your PDF reader first, then try again.