png vs PX, What's the Difference?

Which to use

“png” and “PX” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#18,161
“png” frequency rank: #38,118
“PX” frequency rank: 56279
confusion score

Side-by-Side Comparison

Feature	png	PX
Definition	Alternative letter-case form of PNG; Portable Network Graphics, an open protocol for digital images.	Initialism of post exchange, the U.S. Army's Post Exchange.

Where the spellings diverge

Shared letters are muted; the letters that actually set png and PX apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch

png

2 ch

Spelling & Dictionary Insight

png and PX are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 56279, derived from the frequency rank of both members and their visual similarity.

png is recorded at frequency rank #18,161, classified as anoun, pronounced /pɪŋ/. PX is at rank #38,118, tagged as anoun.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 56279, this pair ranks #127,398 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of png vs PX

Shared letters: p. Private to "png": gn. Private to "PX": x.

"png" · 3 letters · shape CCC · "PX" · 2 letters · shape CC

Frequency comparison

png#18,161

PX#38,118

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "png" and "PX" be used interchangeably?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Which is more common, "png" or "PX"?

"png" is the more common of the two: it sits at frequency rank #18,161 in our English list, against #38,118 for "PX". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering png vs PX

The fastest way to pick the right one every time.

Read both glosses above and match the meaning you intend, only context separates this pair.
See each word in full, definition, IPA, etymology and its other confusables. Full “png” entry
Browse more pairs most likely to be confused. Most confusable