- Open Tools
Tap Tools in the tab bar at the bottom of the app.
- Tap Merge PDFs
A sheet asks where the file is: From Documents (your scans in Zency Scan) or From Files (a PDF on your phone — from email, iCloud Drive, Google Drive or Downloads).
- Add the other files
Tap + From Documents or + From Files to add more. Remove one with ✕.
- Set the order
Drag to change the order. The files are joined top to bottom.
- Merge
Tap Merge 3 files · 5 pages — the button always shows how many files and pages you are joining.
- Share or save the result
You see Merged and the new file, e.g. Invoice INV-2048 (merged).pdf. Turn on Password if the new PDF should ask for one. Tap Share to send it, or Save to Documents to keep it. The original file is never changed.
More screens


Tips
- Password-protected PDF? The tool asks for the password (Password required), then carries on. Under Password when sending you can keep the same password on the result, remove it or set a new one.
- Digitally signed PDF? You are warned first: the new file won't keep the certificate signature. Your original isn't changed.
- Files are processed on your phone and never uploaded.
See it in a real situation: Job application asks for one PDF? Combine diplomas, certificates and references.
