Metrics per run

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

Tested 2025-09-17 18:47:02 using Firefox 142.0.1 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 571 ms 506 ms 630 ms 597 ms 509 ms571 ms563 ms49 ms8.66 %
First Contentful Paint 1.084 s 999 ms 1.185 s 1.084 s 1.253 s1.084 s1.121 s88 ms7.89 %
Largest Contentful Paint 2.186 s 2.221 s 2.271 s 2.373 s 2.289 s2.271 s2.268 s64 ms2.82 %
Timing metrics
First Paint 1.144 s 1.061 s 1.191 s 1.140 s 1.257 s1.144 s1.159 s65 ms5.57 %
First Contentful Paint 1.084 s 999 ms 1.185 s 1.084 s 1.253 s1.084 s1.121 s88 ms7.89 %
Largest Contentful Paint 2.186 s 2.221 s 2.271 s 2.373 s 2.289 s2.271 s2.268 s64 ms2.82 %
Load Event End 2.204 s 2.216 s 2.279 s 2.375 s 2.332 s2.279 s2.281 s66 ms2.88 %
Server Response Time 194 ms 195 ms 195 ms 194 ms 195 ms195 ms195 ms0 ms0.25 %
TTFB 571 ms 506 ms 630 ms 597 ms 509 ms571 ms563 ms49 ms8.66 %
Page Load Time 2.204 s 2.215 s 2.279 s 2.375 s 2.331 s2.279 s2.281 s66 ms2.88 %
First Visual Change 1.200 s 1.133 s 1.233 s 1.233 s 1.333 s1.233 s1.226 s65 ms5.27 %
Last Visual Change 3.200 s 3.133 s 3.267 s 3.433 s 3.367 s3.267 s3.280 s109 ms3.32 %
Speed Index 1.442 s 1.371 s 1.478 s 1.501 s 1.577 s1.478 s1.474 s68 ms4.60 %
Visual Readiness 2.000 s 2.000 s 2.034 s 2.200 s 2.034 s2.034 s2.054 s75 ms3.64 %
Visual Complete 95 2.700 s 2.600 s 2.733 s 2.933 s 2.933 s2.733 s2.780 s133 ms4.77 %
Visual Complete 99 2.767 s 2.667 s 2.800 s 2.966 s 2.967 s2.800 s2.833 s117 ms4.14 %
CPU metrics
Browser metrics
CPU benchmark score 51 ms 53 ms 52 ms 53 ms 51 ms52 ms52 ms1 ms1.72 %
Page metrics
DOM elements 13536 13536 13536 13536 13536135361353600.00 %
Document height 50638 50638 50638 50638 50638506385063800.00 %
Total Requests 71 71 71 71 71717100.00 %
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 956.8 KB 956.7 KB 956.8 KB 956.8 KB 956.8 KB956.8 KB956.8 KB37 B0.00 %
HTML Transfer Size 194.9 KB 194.9 KB 194.9 KB 194.9 KB 194.9 KB194.9 KB194.9 KB0 b0.00 %
JavaScript Transfer Size 287.1 KB 287.0 KB 287.1 KB 287.1 KB 287.1 KB287.1 KB287.1 KB37 B0.01 %
CSS Transfer Size 27.2 KB 27.2 KB 27.2 KB 27.2 KB 27.2 KB27.2 KB27.2 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 %
JSON Transfer Size 2.3 KB 2.3 KB 2.3 KB 2.3 KB 2.3 KB2.3 KB2.3 KB0 b0.00 %
SVG Transfer Size 38.9 KB 38.9 KB 38.9 KB 38.9 KB 38.9 KB38.9 KB38.9 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 %
JSON 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 71 71 71 71 71717100.00 %
First Party Total Transfer Size 956.8 KB 956.7 KB 956.8 KB 956.8 KB 956.8 KB956.8 KB956.8 KB37 B0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %