Question

portable network graphic (.png) files use which of the following types of compression?
a. winzip
b. lossy
c. lzip
d. lossless

Explanation:

PNG files are designed to preserve all original image data without quality loss, so they use lossless compression. WinZip and Lzip are file archiving tools, not the compression type itself, and lossy compression discards data to reduce size, which does not apply to PNG.

Answer:

d. Lossless