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Why are those pesky GIFs still dominating when it comes to animated pictures? I'm sure there are better alternatives nowadays, but why aren't any of them gaining traction?
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APNG files are Animated Portable Network Graphics, or to put it simply, animated PNG files. APNG files support 24 bit color as well as 24 bit transparency. A GIF file has an 8 bit transparency. What that means is that APNG files can handle color better and look a lot smoother when transparent.
With support for HDR images and 12-bit color, AVIF has better image quality and is much more capable than GIF. Parallelization offers some neat encoding and decode speed gains through multi-threading, especially as single-core (and even dual-core) processors have become a thing of the past.
Animated GIFs are popular on the web for good reason. They provide more engagement than an ordinary image, while remaining more digestible compared to a typical video. However GIFs are a terrible format for storing video and are often huge in size leading to slow page load times and high data usage.
Animated png or APNG (http://en.wikipedia.org/wiki/APNG). They can be made in GIMP with the APNG Plug-in But animated Gif's really are the main one out there - flash kinda took over though, but that isn't really an image per se.
Also, other alternatives from the same wikipedia page: The MNG file format is a more powerful alternative to APNG, although is a more complex format and has less web browser support.
The GIF file format has better application and browser support than APNG, but it is limited to 256 colors per frame and supports only 1 bit alpha transparency, by mapping one of the palette colors to transparent.
SVG combined with scripting or SMIL can animate vector graphics and can incorporate raster graphics. (See SVG animation.)
Dynamic graphics created with HTML 5 canvas Object can also be animated.
An alternative method for animations in web pages is to use conventional static images and animate them using JavaScript,[22] Adobe Flash, Microsoft Silverlight, Java or other plugin based technologies.
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