Metrics per run

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

Tested 2025-08-30 03:04:14 using Firefox 141.0 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 872 ms 514 ms 513 ms 513 ms 514 ms514 ms585 ms143 ms24.50 %
First Contentful Paint 1.440 s 931 ms 999 ms 931 ms 1.152 s999 ms1.091 s192 ms17.65 %
Largest Contentful Paint 2.830 s 2.746 s 2.595 s 2.654 s 2.838 s2.746 s2.733 s96 ms3.51 %
Interaction to Next Paint 151.84 ms NaN s NaN s NaN s NaN s152 ms152 ms0 ms0.00 %
Timing metrics
First Paint 1.455 s 1.243 s 1.268 s 1.202 s 1.450 s1.268 s1.324 s107 ms8.11 %
First Contentful Paint 1.440 s 931 ms 999 ms 931 ms 1.152 s999 ms1.091 s192 ms17.65 %
Largest Contentful Paint 2.830 s 2.746 s 2.595 s 2.654 s 2.838 s2.746 s2.733 s96 ms3.51 %
Load Event End 3.293 s 2.959 s 2.876 s 2.571 s 3.120 s2.959 s2.964 s243 ms8.19 %
Server Response Time 465 ms 194 ms 194 ms 195 ms 194 ms194 ms248 ms108 ms43.60 %
TTFB 872 ms 514 ms 513 ms 513 ms 514 ms514 ms585 ms143 ms24.50 %
Page Load Time 3.292 s 2.959 s 2.876 s 2.570 s 3.120 s2.959 s2.963 s243 ms8.20 %
First Visual Change 1.500 s 1.300 s 1.300 s 1.266 s 1.500 s1.300 s1.373 s104 ms7.59 %
Last Visual Change 3.967 s 3.700 s 4.100 s 3.733 s 4.267 s3.967 s3.953 s216 ms5.46 %
Speed Index 1.689 s 1.491 s 1.482 s 1.459 s 1.666 s1.491 s1.557 s99 ms6.35 %
Visual Readiness 2.467 s 2.400 s 2.800 s 2.467 s 2.767 s2.467 s2.580 s168 ms6.52 %
Visual Complete 95 2.833 s 2.733 s 2.567 s 2.666 s 2.633 s2.666 s2.686 s91 ms3.38 %
Visual Complete 99 3.067 s 2.733 s 2.700 s 2.666 s 2.967 s2.733 s2.827 s160 ms5.66 %
CPU metrics
Browser metrics
CPU benchmark score 53 ms 52 ms 51 ms 52 ms 52 ms52 ms52 ms1 ms1.22 %
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 MB7 B0.00 %
HTML Transfer Size 243.3 KB 243.3 KB 243.3 KB 243.3 KB 243.3 KB243.3 KB243.3 KB15 B0.01 %
JavaScript Transfer Size 370.2 KB 370.2 KB 370.2 KB 370.2 KB 370.2 KB370.2 KB370.2 KB9 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 MB7 B0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %