Note : Read this post in Firefox 3 or opera 9.5 only.
When speaking of animated images immediately comes to mind is the GIF format, a file type that complies with the function to show movement but has great limitations, such as failure to handle transparency in degraded or limited to only expose 256 colors.
A very good alternative to this format, thanks to discover the wydstudios, it is the format aPNG (Animated Portable Network Graphics) a file type that allows you to create animation with the advantages of the files PNGs (Support for transparency in degraded and depth of color in 8 and 24 bit) and has some disadvantages that have not helped the rapid acceptance: a high weight of the archives, few tools for creating and limited support in browsers.
At this point the only browsers that support this kind of animation are: KSquirrel 0.7.2, XnView 1.92, Opera 9.5 and Mozilla Firefox 3. And you can see examples and more information of this kind of images on the official site for this format and in Mozilla Labs.
Some cool tools to work with this format are: APNG Assembler, a simple tool that can create animations only climbing a Zip file that contains the pngs of the sequence and APNG Edit extension to Firefox an extension dedicated to edit and create this kind of graphics
In my opinion, is a format that promises to greatly improve the quality of the animation graphics but still needs development to suit current requirements (high quality with few resources.
