Metrics per run

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

Tested 2025-12-07 10:54:11 using Chrome 142.0.7444.59 (runtime settings).

Side by side

Metric123MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 430 ms 430 ms 414 ms430 ms425 ms8 ms1.78 %
First Contentful Paint 1.036 s 1.036 s 1.032 s1.036 s1.035 s2 ms0.18 %
Largest Contentful Paint 1.404 s 1.420 s 1.400 s1.404 s1.408 s9 ms0.61 %
Total Blocking Time 2.482 s 2.492 s 2.490 s2.490 s2.488 s4 ms0.17 %
Cumulative Layout Shift 0.537 0.542 0.5380.5380.5390.0020.40 %
Timing metrics
First Paint 1.036 s 1.036 s 1.032 s1.036 s1.035 s2 ms0.18 %
First Contentful Paint 1.036 s 1.036 s 1.032 s1.036 s1.035 s2 ms0.18 %
Largest Contentful Paint 1.404 s 1.420 s 1.400 s1.404 s1.408 s9 ms0.61 %
Load Event End 4.160 s 4.201 s 4.007 s4.160 s4.123 s83 ms2.02 %
Server Response Time 459 ms 459 ms 459 ms459 ms459 ms0 ms0.00 %
TTFB 430 ms 430 ms 414 ms430 ms425 ms8 ms1.78 %
Page Load Time 4.157 s 4.199 s 4.005 s4.157 s4.120 s83 ms2.02 %
First Visual Change 1.067 s 1.067 s 1.034 s1.067 s1.056 s16 ms1.47 %
Last Visual Change 15.867 s 15.867 s 15.500 s15.867 s15.745 s173 ms1.10 %
Speed Index 8.547 s 8.420 s 8.334 s8.420 s8.434 s87 ms1.04 %
Visual Readiness 14.800 s 14.800 s 14.466 s14.800 s14.689 s157 ms1.07 %
Visual Complete 95 15.400 s 13.767 s 15.400 s15.400 s14.856 s770 ms5.18 %
Visual Complete 99 15.534 s 15.467 s 15.400 s15.467 s15.467 s55 ms0.35 %
CPU metrics
Total Blocking Time 2.482 s 2.492 s 2.490 s2.490 s2.488 s4 ms0.17 %
Max Potential FID 941 ms 904 ms 899 ms904 ms915 ms19 ms2.05 %
Number of Long Tasks 17 16 15161615.10 %
Total Duration of Long Tasks 3.409 s 3.372 s 3.316 s3.372 s3.366 s38 ms1.14 %
Browser metrics
CPU benchmark score 254 ms 249 ms 253 ms253 ms252 ms2 ms0.86 %
Page metrics
Cumulative Layout Shift 0.537 0.542 0.5380.5380.5390.0020.40 %
DOM elements 11825 11827 11827118271182610.01 %
Document height 4691 4691 46914691469100.00 %
Total Requests 34 33 33333301.41 %
HTML Requests 1 1 11100.00 %
JavaScript Requests 8 8 88800.00 %
CSS Requests 2 2 22200.00 %
Font Requests 0 0 00000.00 %
HTTP Errors 0 0 0000N/A
Total Transfer Size 704.3 KB 659.4 KB 659.4 KB659.4 KB674.4 KB21.1 KB3.14 %
HTML Transfer Size 181.2 KB 181.2 KB 181.2 KB181.2 KB181.2 KB0 b0.00 %
JavaScript Transfer Size 339.8 KB 339.4 KB 339.4 KB339.4 KB339.5 KB178 B0.05 %
CSS Transfer Size 22.3 KB 22.3 KB 22.3 KB22.3 KB22.3 KB0 b0.00 %
Font Transfer Size 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 1.8 KB 1.8 KB 1.8 KB1.8 KB1.8 KB0 b0.00 %
JSON Transfer Size 1.8 KB 1.8 KB 1.8 KB1.8 KB1.8 KB0 b0.00 %
Plain Transfer Size 611 B 611 B 611 B611 B611 B0 b0.00 %
SVG Transfer Size 17.1 KB 17.1 KB 17.1 KB17.1 KB17.1 KB0 b0.00 %
Total Content Size 2.5 MB 2.4 MB 2.4 MB2.4 MB2.4 MB20.8 KB0.83 %
HTML Content Size 1001.7 KB 1001.7 KB 1001.7 KB1001.7 KB1001.7 KB0 b0.00 %
JavaScript Content Size 1.2 MB 1.2 MB 1.2 MB1.2 MB1.2 MB321 B0.03 %
CSS Content Size 154.2 KB 154.2 KB 154.2 KB154.2 KB154.2 KB0 b0.00 %
Image Content Size 133.4 KB 90.1 KB 90.1 KB90.1 KB104.5 KB20.4 KB19.55 %
Font Content Size 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Content Size 2.7 KB 2.7 KB 2.7 KB2.7 KB2.7 KB0 b0.00 %
JSON Content Size 263 B 263 B 263 B263 B263 B0 b0.00 %
Plain Content Size 0 b 0 b 0 b0 b0 b0 b0.00 %
SVG Content Size 10.4 KB 10.4 KB 10.4 KB10.4 KB10.4 KB0 b0.00 %
Third Party metrics
First Party metrics
First Party Requests 34 33 33333301.41 %
First Party Total Transfer Size 704.3 KB 659.4 KB 659.4 KB659.4 KB674.4 KB21.1 KB3.14 %
First Party Total Content Size 2.5 MB 2.4 MB 2.4 MB2.4 MB2.4 MB20.8 KB0.83 %