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APNG which stands for Animated Portable Network Graphics is an animated raster image file format first introduced by Mozilla. It extends the PNG standards to add support for animated images.
Unlike GIF which only uses 8-bit indexed color mode, APNG supports 24-bit color depth and many color modes, as PNG does. Although it is not an official PNG extension, it is backward compatible; meaning, an application that supports PNG (but not APNG), is still able to open the first frame of the APNG file.
| Name | Animated Portable Network Graphics | ||||||||||||||||||
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| File Extension(s) | .apng | ||||||||||||||||||
| Category | Raster Images | ||||||||||||||||||
| Use For | Basic animations such as throbbers and progress indicators, animated stickers and etc. | ||||||||||||||||||
| Developer | Mozilla | ||||||||||||||||||
| MIME Type(s) | image/apng image/vnd.mozilla.apng | ||||||||||||||||||
| License | Free and open under the Creative Commons Attribution-ShareAlike license (CC-BY-SA) version 3.0 or later. | ||||||||||||||||||
| File Sample(s) | N/A | ||||||||||||||||||
| Compression | Lossless, DEFLATE algorithm. | ||||||||||||||||||
| Max Dimensions | 2,147,483,647×2,147,483,647 pixels | ||||||||||||||||||
| Color Modes |
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| Animation | Yes | ||||||||||||||||||
| Transparency | Yes | ||||||||||||||||||
| Interlacing | Yes | ||||||||||||||||||
| Metadata | Yes | ||||||||||||||||||
| Layers | No | ||||||||||||||||||
| Multipage | Yes |