Another voice of concern regarding ScanSnap software support for macOS.
Back in January of 2017 I contacted Apple tech support and Fujitsu tech support regarding problems with PDF files created by the ScanSnap, associated with macOS Sierra 10.12.3 release. Among other problems, the OCR layer was broken - no files could be created with OCR support. Later, in Nov 2017, with macOS High Sierra, PDF files created with the ScanSnap were corrupted by out-of-order pages. I have been told that these problems were due to Apple’s new implementation of PDFkit, the macOS software that supports PDF files. These problems were resolved eventually, but a few bugs persist even today.
A Fujitsu tech support rep, after some delay, advised me (by email) to download and install version 6.3 of the Fujitsu software, designed for the iX500 model. My scanner is the S1500M model, for which the latest software support posted on the Fujitsu website is version 3.2, apparently from several years ago.
This, along with comments from others above, makes me concerned about ongoing support for the ScanSnap line for the Mac. If macOS Mojave “breaks” the Fujitsu drivers again, I will have to choose between keeping the Fujitsu scanner and updating to macOS Mojave.
Someone, elsewhere in this forum, suggested using the scanning software VueScan with the ScanSnap scanner. Does anyone have experience with this?