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Animated Portable Network Graphics (APNG) is a file format which extends the Portable Network Graphics (PNG) specification to permit animated images that work similarly to animated GIF files, while supporting 24 or 48-bit images and full alpha transparency not available for GIFs. It also retains backward compatibility with non-animated PNG files.
"Under construction" animated GIFs were a common feature of unfinished websites in the late 90s and early noughts. Animated GIFs like this one were once a common decorative feature of personal websites in the late 90s and early noughts. CompuServe introduced GIF on 15 June 1987 to provide a color image format for their file downloading areas.
The Hampster Dance is one of the earliest Internet memes.Created in 1998 by Canadian art student Deidre LaCarte as a GeoCities page, the dance features rows of animated GIFs of hamsters and other rodents dancing in various ways to a sped-up sample from the song "Whistle-Stop", written and performed by Roger Miller for the 1973 Walt Disney Productions film Robin Hood.
GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats.The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible.
The PNG (Portable Network Graphics) file format was created as a free, open-source alternative to GIF. The PNG file format supports 8-bit (256 colors) paletted images (with optional transparency for all palette colors) and 24-bit truecolor (16 million colors) or 48-bit truecolor with and without alpha channel – while GIF supports only 8-bit ...
For display on computers, technology such as the animated GIF and Flash animation were developed. In addition to short films, feature films, television series, animated GIFs, and other media dedicated to the display of moving images, animation is also prevalent in video games, motion graphics, user interfaces, and visual effects. [1]
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When converting an image from the PNG format to GIF, the image quality may suffer due to posterization if the PNG image has more than 256 colors. GIF intrinsically supports animated images. PNG supports animation only via unofficial extensions (see the section on animation, above). PNG images are less widely supported by older browsers.