Metrics per run

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

Tested 2025-08-25 11:40:16 using Firefox 141.0 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 597 ms 515 ms 527 ms 584 ms 594 ms584 ms563 ms35 ms6.23 %
First Contentful Paint 1.321 s 965 ms 982 ms 1.050 s 1.067 s1.050 s1.077 s128 ms11.89 %
Largest Contentful Paint 2.391 s 2.695 s 2.551 s 2.341 s 2.579 s2.551 s2.511 s129 ms5.14 %
Interaction to Next Paint 255.2 ms NaN s NaN s NaN s NaN s255 ms255 ms0 ms0.00 %
Timing metrics
First Paint 1.325 s 1.234 s 1.253 s 1.313 s 1.323 s1.313 s1.290 s38 ms2.97 %
First Contentful Paint 1.321 s 965 ms 982 ms 1.050 s 1.067 s1.050 s1.077 s128 ms11.89 %
Largest Contentful Paint 2.391 s 2.695 s 2.551 s 2.341 s 2.579 s2.551 s2.511 s129 ms5.14 %
Load Event End 3.071 s 2.799 s 2.904 s 3.124 s 3.113 s3.071 s3.002 s129 ms4.29 %
Server Response Time 277 ms 194 ms 223 ms 282 ms 288 ms277 ms253 ms37 ms14.82 %
TTFB 597 ms 515 ms 527 ms 584 ms 594 ms584 ms563 ms35 ms6.23 %
Page Load Time 3.070 s 2.799 s 2.903 s 3.124 s 3.113 s3.070 s3.002 s129 ms4.29 %
First Visual Change 1.367 s 1.300 s 1.300 s 1.366 s 1.400 s1.366 s1.347 s40 ms2.97 %
Last Visual Change 4.033 s 3.600 s 4.133 s 4.033 s 4.066 s4.033 s3.973 s190 ms4.78 %
Speed Index 1.516 s 1.486 s 1.454 s 1.519 s 1.555 s1.516 s1.506 s34 ms2.26 %
Visual Readiness 2.666 s 2.300 s 2.833 s 2.667 s 2.666 s2.666 s2.626 s176 ms6.68 %
Visual Complete 95 2.367 s 2.700 s 2.300 s 2.366 s 2.366 s2.366 s2.420 s142 ms5.89 %
Visual Complete 99 2.933 s 2.700 s 2.900 s 2.966 s 2.933 s2.933 s2.886 s96 ms3.31 %
CPU metrics
Browser metrics
CPU benchmark score 51 ms 53 ms 52 ms 55 ms 52 ms52 ms53 ms1 ms2.58 %
Page metrics
DOM elements 20887 20887 20887 20887 20887208872088700.00 %
Document height 45945 45945 45945 45945 45945459454594500.00 %
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 1.4 MB 1.4 MB 1.4 MB 1.4 MB 1.4 MB1.4 MB1.4 MB1.0 KB0.07 %
HTML Transfer Size 243.7 KB 243.7 KB 243.7 KB 243.7 KB 243.7 KB243.7 KB243.7 KB0 b0.00 %
JavaScript Transfer Size 370.1 KB 370.1 KB 370.1 KB 370.1 KB 370.1 KB370.1 KB370.1 KB0 b0.00 %
CSS Transfer Size 27.2 KB 27.2 KB 27.2 KB 27.2 KB 27.2 KB27.2 KB27.2 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 1.4 MB 1.4 MB 1.4 MB 1.4 MB 1.4 MB1.4 MB1.4 MB1.0 KB0.07 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %