01
Why serving sizes are hard to compare
One snack might list a 21 g serving while another lists 38 g. Looking only at the printed per-serving number can make two products appear more different or more similar than they are.
Compare consistently
Serving size vs. 100 g.
Packages use different serving sizes. JFS normalizes supported values when the source record provides enough information so products can be compared on a more consistent basis.
02
What JFS normalizes
When reliable serving-size information is available, JFS can convert supported nutrition values from a per-serving basis to a per-100 g or per-100 mL basis before scoring.
03
What normalization does not fix
Normalization cannot repair missing, outdated, or incorrect source data. JFS still depends on the quality of the underlying product record.
04
The package label still matters
If the current package differs from the database record, use the package as the more current reference and treat the JFS result as educational context.
Remember: JFS is for general education. Always verify the current package label, and use professional guidance when you need individualized health, dietary, or allergen advice.