I heard of a HTML5-based alternative some time ago called the "ugoira HTML5 zip player". It uses a ZIP file of PNG/JPG files and renders the animation using Jav

I heard of a HTML5-based alternative some time ago called the "ugoira HTML5 zip player". It uses a ZIP file of PNG/JPG files and renders the animation using JavaScript onto a <canvas>. There's a detailed slide deck talking about it [1] and the source code is available too [2]. [1] https://marcan.st/talks/2014_pixiv_ugoku_player/ https://marcan.st/talks/2014_pixiv_ugoku_player/ [2] https://github.com/pixiv/zip_player https://github.com/pixiv/zip_player