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How much time/space does removing unused CSS selectors save? Is there a way for me to measure that on different web browsers?

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    Probably the browser won't notice it, but you will. Having well organized and documented files will save you much time and headaches. – Jose Faeti Jul 12 '11 at 19:44

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The only real impact will come from the css file size being slightly larger, resulting in longer download and parse times.

But for the most part, there are a few million other things with much bigger impact.

tybro0103
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  • Interesting topic. I have seen quite a few comments to the effect that the effect is negligible, but what do you think about Nick Confer's comment here: http://stackoverflow.com/questions/15292802/do-unused-css-styles-affect-load-times – Matt Evans Jun 18 '15 at 06:51