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Who remembers sprite sheets? Does that give my age away?

I did an optimization pass for a client once where I got rid of a ton of the sprites but didn't have the energy to redo it all, so it just had huge sections that were blank.

Super snappy loading afterwards though.

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Yes, good times! With http2/3 they don't really matter anymore though, you get similar benefits from request pipelining.
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Spriting is actually harmful for performance except in specific HTTP-1 scenarios.
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