Metrics per run

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

Tested 2025-08-31 00:15:22 using Firefox 141.0 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 495 ms 496 ms 678 ms 511 ms 587 ms511 ms553 ms71 ms12.82 %
First Contentful Paint 948 ms 982 ms 1.355 s 1.101 s 982 ms982 ms1.074 s150 ms13.97 %
Largest Contentful Paint 2.721 s 2.638 s 2.424 s 2.424 s 2.682 s2.638 s2.578 s128 ms4.98 %
Timing metrics
First Paint 1.228 s 1.254 s 1.619 s 1.386 s 1.254 s1.254 s1.348 s146 ms10.85 %
First Contentful Paint 948 ms 982 ms 1.355 s 1.101 s 982 ms982 ms1.074 s150 ms13.97 %
Largest Contentful Paint 2.721 s 2.638 s 2.424 s 2.424 s 2.682 s2.638 s2.578 s128 ms4.98 %
Load Event End 2.725 s 2.854 s 2.430 s 2.888 s 2.904 s2.854 s2.760 s177 ms6.40 %
Server Response Time 194 ms 193 ms 221 ms 194 ms 194 ms194 ms199 ms11 ms5.48 %
TTFB 495 ms 496 ms 678 ms 511 ms 587 ms511 ms553 ms71 ms12.82 %
Page Load Time 2.725 s 2.854 s 2.430 s 2.888 s 2.903 s2.854 s2.760 s177 ms6.40 %
First Visual Change 1.267 s 1.300 s 1.666 s 1.433 s 1.267 s1.300 s1.387 s153 ms11.00 %
Last Visual Change 3.867 s 3.967 s 4.200 s 4.000 s 3.800 s3.967 s3.967 s137 ms3.44 %
Speed Index 1.469 s 1.488 s 1.786 s 1.580 s 1.462 s1.488 s1.557 s122 ms7.84 %
Visual Readiness 2.600 s 2.667 s 2.534 s 2.567 s 2.533 s2.567 s2.580 s50 ms1.93 %
Visual Complete 95 2.733 s 2.633 s 2.400 s 2.433 s 2.667 s2.633 s2.573 s132 ms5.14 %
Visual Complete 99 2.733 s 2.633 s 3.166 s 2.933 s 2.800 s2.800 s2.853 s184 ms6.46 %
CPU metrics
Browser metrics
CPU benchmark score 52 ms 51 ms 52 ms 54 ms 52 ms52 ms52 ms1 ms1.88 %
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 1.2 MB 1.2 MB 1.2 MB 1.2 MB 1.2 MB1.2 MB1.2 MB1 B0.00 %
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 KB0 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 1.2 MB 1.2 MB 1.2 MB 1.2 MB 1.2 MB1.2 MB1.2 MB1 B0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %