Spritesheets and other forms of asset concatenation are aiming to reduce the impact of round-trip latency and overhead of HTTP i.e repeated headers. I've alway

Spritesheets and other forms of asset concatenation are aiming to reduce the impact of round-trip latency and overhead of HTTP i.e repeated headers. I've always seen the "image is already loaded" as a "nice" side effect but spritesheets can have issues in mobile contexts as the whole image must be decoded jsut to access the sprite, it's unclear how effectively browsers cache the individual sprites in memory, compared to individual images too.