Fujitsu ScanSnap iX500 Operator's Manual page 67

The following shows the estimated file size when scanning one side of a color document.
Sample document
Estimated image data size (KB)
Automatic
Color mode
resolution
Color 363.6
Gray 328.4
B&W 212.8
Color high 163.6
compression
Specification
Paper type
Normal catalog
Paper size
A4
File format
PDF
Compression rate
3
Normal Better
245.6 363.6
223.6 328.4
136 212.8
123.2 163.6
67
System Requirements
Best Excellent
644.8 1673.2
580.4 1832.8
455.2 1300.4
124.8 -