Fujitsu S1500M - ScanSnap - Document Scanner Operator's Manual page 298

To automatically set keywords to PDF files, change the settings by following the procedure
below.
1.
From the ScanSnap Manager menu, select [Settings].
⇒
The ScanSnap setup window appears.
2.
In the [File format] pop-up menu on the [File option] tab, select
[PDF(*.pdf)].
Using the ScanSnap in Various Ways (for Mac OS Users)
298