Files Script Lines Render time (ms) Site #1 3,697 1,504 1,392 41 77,768 2,700 Site #2 2,278 1,100 5,325 29 39,183 2900 Site #3 1,061 2,673 1,105 66 12,643 2500 Site #4 1,812 4,252 1,672 12 10,284 2600 Site #5 1,372 900 3,902 6 38,269 1500 Many developers would assume that the fastest site would be the one with the least number of formatted lines of JavaScript, like Site #4, or the one with the least bytes downloaded, like Site #3. However, that’s not the case. Site #5 is actually the fastest, even though it has more JavaScript and bytes downloaded.