What to know before you start
Pages keep their original sizes and orientation, so portrait and landscape documents can be combined. The file list determines the order of entire documents; use Organize PDF afterward to reorder individual pages.
Frequently asked questions
Will bookmarks and interactive forms be preserved?
Page content is copied into a new document. Document-level bookmarks, attachments and interactive form behavior are not guaranteed to survive. Keep the originals and check the merged file before sharing.
Are my files uploaded to a server?
No. Files are processed in your browser on your device. There is no account to create and no server upload step.
Can I use password-protected PDFs?
Password-protected PDFs are not supported. Use an unprotected copy that you are authorized to edit. Editing a digitally signed PDF can invalidate its signature.