Metrics per run

https://en.wikipedia.org/wiki/Taylor_Swift

Tested 2025-08-30 09:06:41 using Firefox 141.0 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 499 ms 710 ms 718 ms 501 ms 497 ms501 ms585 ms105 ms18.01 %
First Contentful Paint 1.355 s 1.169 s 1.186 s 966 ms 949 ms1.169 s1.125 s152 ms13.47 %
Largest Contentful Paint 2.864 s 2.628 s 2.820 s 2.688 s 2.814 s2.814 s2.763 s89 ms3.23 %
Interaction to Next Paint 282.38 ms NaN s NaN s NaN s NaN s282 ms282 ms0 ms0.00 %
Timing metrics
First Paint 1.368 s 1.439 s 1.458 s 1.241 s 1.224 s1.368 s1.346 s98 ms7.25 %
First Contentful Paint 1.355 s 1.169 s 1.186 s 966 ms 949 ms1.169 s1.125 s152 ms13.47 %
Largest Contentful Paint 2.864 s 2.628 s 2.820 s 2.688 s 2.814 s2.814 s2.763 s89 ms3.23 %
Load Event End 3.044 s 3.339 s 3.369 s 2.941 s 3.013 s3.044 s3.141 s177 ms5.64 %
Server Response Time 195 ms 288 ms 299 ms 194 ms 195 ms195 ms234 ms49 ms20.73 %
TTFB 499 ms 710 ms 718 ms 501 ms 497 ms501 ms585 ms105 ms18.01 %
Page Load Time 3.044 s 3.338 s 3.368 s 2.940 s 3.012 s3.044 s3.140 s177 ms5.64 %
First Visual Change 1.400 s 1.500 s 1.533 s 1.300 s 1.267 s1.400 s1.400 s105 ms7.52 %
Last Visual Change 4.233 s 3.966 s 4.000 s 4.100 s 3.933 s4.000 s4.046 s109 ms2.69 %
Speed Index 1.583 s 1.668 s 1.679 s 1.476 s 1.478 s1.583 s1.577 s88 ms5.58 %
Visual Readiness 2.833 s 2.466 s 2.467 s 2.800 s 2.666 s2.666 s2.646 s157 ms5.94 %
Visual Complete 95 2.767 s 2.666 s 2.566 s 2.567 s 2.800 s2.666 s2.673 s98 ms3.65 %
Visual Complete 99 2.867 s 2.966 s 2.966 s 2.667 s 2.800 s2.867 s2.853 s112 ms3.94 %
CPU metrics
Browser metrics
CPU benchmark score 52 ms 52 ms 51 ms 51 ms 53 ms52 ms52 ms1 ms1.44 %
Page metrics
DOM elements 20837 20837 20837 20837 20837208372083700.00 %
Document height 45841 45841 45841 45841 45841458414584100.00 %
Total Requests 64 64 64 64 64646400.00 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 7 7 7 7 77700.00 %
CSS Requests 2 2 2 2 22200.00 %
Font Requests 0 0 0 0 00000.00 %
HTTP Errors 0 0 0 0 0000N/A
Total Transfer Size 1.3 MB 1.3 MB 1.3 MB 1.3 MB 1.3 MB1.3 MB1.3 MB1.9 KB0.14 %
HTML Transfer Size 243.3 KB 243.3 KB 243.3 KB 243.3 KB 243.3 KB243.3 KB243.3 KB0 b0.00 %
JavaScript Transfer Size 370.2 KB 370.2 KB 370.2 KB 370.2 KB 370.2 KB370.2 KB370.2 KB1 B0.00 %
CSS Transfer Size 27.3 KB 27.3 KB 27.3 KB 27.3 KB 27.3 KB27.3 KB27.3 KB1 B0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 1.9 KB 1.9 KB 1.9 KB 1.9 KB 1.9 KB1.9 KB1.9 KB0 b0.00 %
SVG Transfer Size 32.9 KB 32.9 KB 32.9 KB 32.9 KB 32.9 KB32.9 KB32.9 KB0 b0.00 %
Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
HTML Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
JavaScript Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
CSS Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Image Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Font Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
SVG Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Third Party metrics
First Party metrics
First Party Requests 64 64 64 64 64646400.00 %
First Party Total Transfer Size 1.3 MB 1.3 MB 1.3 MB 1.3 MB 1.3 MB1.3 MB1.3 MB1.9 KB0.14 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %