IPA: /ˈʃɔːrtənər/
KK: /ˈʃɔrtənər/
A person or thing that makes something shorter in length or duration.
The URL shortener made it easy to share links on social media.
Shortener → It is formed from "short" (from Old English *sceort*, meaning brief or not long) and "-ener" (a suffix used to indicate a person or thing that performs a specific action). The word "shortener" refers to something that makes something else shorter.
Think of something that makes things 'brief' or 'not long' — that's what a shortener does.