Metrics per run

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

Tested 2025-06-18 15:00:24 using Firefox 139.0.1 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 670 ms 450 ms 518 ms 599 ms 444 ms518 ms536 ms87 ms16.28 %
First Contentful Paint 1.186 s 966 ms 1.050 s 1.118 s 949 ms1.050 s1.054 s90 ms8.52 %
Largest Contentful Paint 2.340 s 2.205 s 2.242 s 2.237 s 2.042 s2.237 s2.213 s97 ms4.37 %
Timing metrics
First Paint 1.384 s 1.144 s 1.253 s 1.315 s 1.144 s1.253 s1.248 s94 ms7.57 %
First Contentful Paint 1.186 s 966 ms 1.050 s 1.118 s 949 ms1.050 s1.054 s90 ms8.52 %
Largest Contentful Paint 2.340 s 2.205 s 2.242 s 2.237 s 2.042 s2.237 s2.213 s97 ms4.37 %
Load Event End 2.548 s 2.340 s 2.446 s 2.522 s 2.350 s2.446 s2.441 s85 ms3.50 %
Server Response Time 153 ms 126 ms 125 ms 152 ms 125 ms126 ms136 ms13 ms9.78 %
TTFB 670 ms 450 ms 518 ms 599 ms 444 ms518 ms536 ms87 ms16.28 %
Page Load Time 2.548 s 2.340 s 2.446 s 2.521 s 2.350 s2.446 s2.441 s85 ms3.49 %
First Visual Change 1.433 s 1.200 s 1.300 s 1.366 s 1.200 s1.300 s1.300 s92 ms7.05 %
Last Visual Change 3.533 s 3.333 s 3.500 s 3.500 s 3.367 s3.500 s3.447 s81 ms2.34 %
Speed Index 1.687 s 1.456 s 1.565 s 1.621 s 1.443 s1.565 s1.554 s94 ms6.05 %
Visual Readiness 2.100 s 2.133 s 2.200 s 2.134 s 2.167 s2.134 s2.147 s34 ms1.58 %
Visual Complete 95 2.533 s 2.233 s 2.467 s 2.466 s 2.333 s2.466 s2.406 s108 ms4.50 %
Visual Complete 99 2.533 s 2.233 s 2.467 s 2.500 s 2.367 s2.467 s2.420 s109 ms4.49 %
CPU metrics
Browser metrics
CPU benchmark score 51 ms 51 ms 51 ms 51 ms 52 ms51 ms51 ms0 ms0.78 %
Page metrics
DOM elements 22613 22613 22613 22613 22613226132261300.00 %
Document height 51151 51151 51151 51151 51151511515115100.00 %
Total Requests 66 65 65 65 65656500.61 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 8 8 8 8 88800.00 %
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 1.1 MB 1.1 MB 1.1 MB 1.1 MB 1.1 MB1.1 MB1.1 MB2.7 KB0.23 %
HTML Transfer Size 265.8 KB 265.8 KB 265.8 KB 265.8 KB 265.8 KB265.8 KB265.8 KB0 b0.00 %
JavaScript Transfer Size 285.5 KB 285.5 KB 285.5 KB 285.5 KB 285.5 KB285.5 KB285.5 KB1 B0.00 %
CSS Transfer Size 26.9 KB 26.9 KB 26.9 KB 26.9 KB 26.9 KB26.9 KB26.9 KB0 b0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 2.0 KB 2.0 KB 2.0 KB 2.0 KB 2.0 KB2.0 KB2.0 KB0 b0.00 %
SVG Transfer Size 39.5 KB 39.5 KB 39.5 KB 39.5 KB 39.5 KB39.5 KB39.5 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 66 65 65 65 65656500.61 %
First Party Total Transfer Size 1.1 MB 1.1 MB 1.1 MB 1.1 MB 1.1 MB1.1 MB1.1 MB2.7 KB0.23 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %