The latest Construct updates and browser updates have made possible some interesting new improvements for both video support and images. We wanted to highlight...
What about animated WebP as an alternative to sprites? A 15 frame idle animation for a player character will have most pixels be the same between most frames. (i.e. only the chest lightly moves with breathing, etc) Video codecs already use some pretty advanced magic to trim down file size for sequential frames that don't change much. Could animated sprites do the same?
Construct uses spritesheets instead of animated image formats. Spritesheets also allow compression between similar parts of images on the same sheet.