Metrics per run

https://it.wikipedia.org/wiki/Jannik_Sinner

Tested 2025-09-17 16:20:36 using Firefox 142.0.1 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 617 ms 526 ms 550 ms 519 ms 675 ms550 ms577 ms60 ms10.36 %
First Contentful Paint 999 ms 813 ms 846 ms 915 ms 966 ms915 ms908 ms70 ms7.72 %
Largest Contentful Paint 1.356 s 1.373 s 1.821 s 1.814 s 1.864 s1.814 s1.646 s230 ms13.99 %
Timing metrics
First Paint 1.005 s 893 ms 929 ms 920 ms 1.044 s929 ms958 ms57 ms5.92 %
First Contentful Paint 999 ms 813 ms 846 ms 915 ms 966 ms915 ms908 ms70 ms7.72 %
Largest Contentful Paint 1.356 s 1.373 s 1.821 s 1.814 s 1.864 s1.814 s1.646 s230 ms13.99 %
Load Event End 2.282 s 2.153 s 2.337 s 2.203 s 2.238 s2.238 s2.243 s63 ms2.83 %
Server Response Time 259 ms 195 ms 195 ms 194 ms 194 ms195 ms207 ms26 ms12.44 %
TTFB 617 ms 526 ms 550 ms 519 ms 675 ms550 ms577 ms60 ms10.36 %
Page Load Time 2.282 s 2.152 s 2.336 s 2.202 s 2.237 s2.237 s2.242 s63 ms2.83 %
First Visual Change 1.067 s 934 ms 1.000 s 1.000 s 1.100 s1.000 s1.020 s58 ms5.68 %
Last Visual Change 3.033 s 3.000 s 3.267 s 3.267 s 3.033 s3.033 s3.120 s121 ms3.87 %
Speed Index 1.196 s 1.090 s 1.188 s 1.188 s 1.271 s1.188 s1.187 s58 ms4.85 %
Visual Readiness 1.966 s 2.066 s 2.267 s 2.267 s 1.933 s2.066 s2.100 s143 ms6.83 %
Visual Complete 95 2.000 s 1.967 s 2.067 s 2.033 s 2.067 s2.033 s2.027 s39 ms1.92 %
Visual Complete 99 2.000 s 1.967 s 2.100 s 2.100 s 2.067 s2.067 s2.047 s54 ms2.64 %
CPU metrics
Browser metrics
CPU benchmark score 51 ms 52 ms 52 ms 51 ms 51 ms51 ms51 ms0 ms0.95 %
Page metrics
DOM elements 4462 4462 4462 4461 44624462446200.01 %
Document height 15026 15026 15026 15026 15026150261502600.00 %
Total Requests 75 75 75 75 75757500.00 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 10 10 10 10 10101000.00 %
CSS Requests 3 3 3 3 33300.00 %
Font Requests 0 0 0 0 00000.00 %
HTTP Errors 0 0 0 0 0000N/A
Total Transfer Size 605.4 KB 605.4 KB 605.4 KB 605.4 KB 605.4 KB605.4 KB605.4 KB3 B0.00 %
HTML Transfer Size 60.5 KB 60.5 KB 60.5 KB 60.5 KB 60.5 KB60.5 KB60.5 KB0 b0.00 %
JavaScript Transfer Size 285.8 KB 285.8 KB 285.8 KB 285.8 KB 285.8 KB285.8 KB285.8 KB3 B0.00 %
CSS Transfer Size 28.6 KB 28.6 KB 28.6 KB 28.6 KB 28.6 KB28.6 KB28.6 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 33.8 KB 33.8 KB 33.8 KB 33.8 KB 33.8 KB33.8 KB33.8 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 75 75 75 75 75757500.00 %
First Party Total Transfer Size 605.4 KB 605.4 KB 605.4 KB 605.4 KB 605.4 KB605.4 KB605.4 KB3 B0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %