GUIDE深度 · Deep dive
Merging PDFs Without Mistakes
Check file order and page orientation first; scans often mix portrait and landscape. Decrypt encrypted PDFs and repair damaged ones before merging. After merging, check the first page, last page and total count.
Sort by chapter/date, not just filename.
For scans, confirm front/back order.
Total pages should equal the sum of inputs.
Check orientation and page size consistency.
Decrypt encrypted files first.
FAQ
Why did merging fail?
Usually encryption, damage or a non-PDF file; decrypt or re-export.
Are bookmarks/forms preserved?
Pages are kept; bookmarks/form fields may be lost, so verify after merging.