Enter a clue or pattern or both:
The Clue
Computer image file format (4 letter answer)
The Answer
JPEG
Tags
Notes
The answer JPEG is rarely seen, appearing only about once every 1300 puzzles.
Related Clues
Image format
Compressed pic, of a sort
Digital image format
Emailed pic, often
PC image acronym
PC image format
Uploaded pic, often
Computer graphics file format