> more verbose, more error-prone and more confusing than just specifying different resources
That's largely opinion: are byte ranges really better than having to maintain clusters of related images? Any serious site already has to deal with things like cache invalidation when a source file changes and by the scale of things which sites do for performance this is certainly no worse than, say, JavaScript/CSS minification or UA sniffing.
That's largely opinion: are byte ranges really better than having to maintain clusters of related images? Any serious site already has to deal with things like cache invalidation when a source file changes and by the scale of things which sites do for performance this is certainly no worse than, say, JavaScript/CSS minification or UA sniffing.