# png vs PU

> English confusable word pair

## The two words

### png
*noun · IPA /pɪŋ/ · frequency rank #18,161*
Alternative letter-case form of PNG; Portable Network Graphics, an open protocol for digital images.

### PU
*intj · frequency rank #16,315*
Alternative form of P U; expression used when encountering a displeasing smell; exaggerated pronunciation of pew.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/png-vs-pu