Computer Science for IGCSE & O level - Data Representation (Section 12 - No. 30)
In the context of image file formats, what are the main characteristics of a PNG file?
Uses lossy compression.
Supports transparency.
Uses lossless compression.
Suitable for photographs.
Forklaring
PNG files use lossless compression and are known for supporting transparency. They are generally not ideal for photos because the compression is less efficient for photographic detail than JPEG.