The World Wide Web Consortium (W3C), which manages web standards and guidelines, recently published new specifications for the PNG (Portable Network Graphics) image format. The updated format...
There were two separate attempts at creating an animated PNG format back when. “APNG” and “MNG”. I Firefox even supports APNG. I guess that was never part of the PNG spec, though. Just a separate image format that was loosely inspired by PNG and also supported animation, I guess.
MNG tried to do everything (iirc it could even embed links, did play/pause, and seeking, like a static version of Flash), not surprising it didn’t catch on. APNG was a simple enough extension that everybody just ended up using that instead (The only browser that doesn’t support it being IE and IE-era Edge). Now the W3C is handling PNG, they just accepted that reality and added it to the official spec now.
There were two separate attempts at creating an animated PNG format back when. “APNG” and “MNG”. I Firefox even supports APNG. I guess that was never part of the PNG spec, though. Just a separate image format that was loosely inspired by PNG and also supported animation, I guess.
MNG tried to do everything (iirc it could even embed links, did play/pause, and seeking, like a static version of Flash), not surprising it didn’t catch on. APNG was a simple enough extension that everybody just ended up using that instead (The only browser that doesn’t support it being IE and IE-era Edge). Now the W3C is handling PNG, they just accepted that reality and added it to the official spec now.