The Animated Portable Network Graphics (APNG) file format is an extension to the Portable Network Graphics (PNG) specification. It allows for animated PNG files that work similarly to animated GIF files, while supporting 24-bit images and 8-bit transparency not available for GIFs. It also retains backward compatibility with non-animated PNG files.
The first frame of an APNG file is stored as a normal PNG stream, so most standard PNG decoders are able to display the first frame of an APNG file. The frame speed data and extra animation frames are stored in extra chunks (as provided for by the original PNG specification).
APNG competes with Multiple-image Network Graphics (MNG), a comprehensive format for bitmapped animations created by the same team as PNG. APNG's advantage is the smaller library size and compatibility with older PNG implementations.
APNG (cable system)
APNG (Australia Papua New Guinea ) is a submarine telecommunications cable system in the Coral Sea linking Australia and Papua New Guinea.
It has landing points in Cairns, Queensland, Australia and Port Moresby, Papua New Guinea.
It is an analogue coaxial copper cable with a capacity of 480 channels at 5 MHz each, giving a data rate of 16 Mbit/s. It has a total cable length of 897 km. It started operation in 1976 and has been replaced by the APNG-2 cable.
APNG may mean:
- APNG, image file format
- APNG (cable system), submarine telecommunications cable system linking Australia and Papua New Guinea
- APNG-2 (cable system), submarine telecommunications cable system linking Australia and Papua New Guinea
- Airlines PNG, an airline of Papua New Guinea