IPA: /ˈkʌstəˌmaɪzər/
KK: /ˈkʌstəˌmaɪzər/
A person or company that makes changes or adjustments to something to meet specific needs or preferences.
The customizer added new features to the car to make it unique.
Customizer → It is formed from "custom" (from Old French *costume*, meaning a habitual practice or usage) and "-izer" (a suffix meaning to make or to cause to be). The word "customizer" refers to someone who makes or causes something to be tailored or personalized according to habits or preferences.
Think of someone who makes things according to their 'habits' or 'practices' — that's what a customizer does.