Metrics per run

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

Tested 2026-03-27 07:13:11 using Firefox 148.0.2 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 427 ms 821 ms 498 ms 427 ms 426 ms427 ms520 ms153 ms29.46 %
First Contentful Paint 1.120 s 1.713 s 1.180 s 1.083 s 1.111 s1.120 s1.241 s238 ms19.16 %
Largest Contentful Paint 1.139 s 1.732 s 1.559 s 1.474 s 1.407 s1.474 s1.462 s195 ms13.32 %
Interaction to Next Paint 184 ms NaN s 112 ms NaN s NaN s148 ms148 ms36 ms24.32 %
Timing metrics
First Paint 1.120 s 1.713 s 1.180 s 1.082 s 1.110 s1.120 s1.241 s238 ms19.19 %
First Contentful Paint 1.120 s 1.713 s 1.180 s 1.083 s 1.111 s1.120 s1.241 s238 ms19.16 %
Largest Contentful Paint 1.139 s 1.732 s 1.559 s 1.474 s 1.407 s1.474 s1.462 s195 ms13.32 %
Load Event End 1.612 s 2.201 s 1.682 s 1.976 s 1.607 s1.682 s1.816 s235 ms12.97 %
Server Response Time 104 ms 501 ms 104 ms 103 ms 105 ms104 ms183 ms159 ms86.59 %
TTFB 427 ms 821 ms 498 ms 427 ms 426 ms427 ms520 ms153 ms29.46 %
Page Load Time 1.612 s 2.201 s 1.682 s 1.976 s 1.607 s1.682 s1.816 s235 ms12.97 %
First Visual Change 1.133 s 1.766 s 1.233 s 1.100 s 1.166 s1.166 s1.280 s247 ms19.31 %
Last Visual Change 3.100 s 3.833 s 3.333 s 3.233 s 3.100 s3.233 s3.320 s271 ms8.17 %
Speed Index 1.172 s 1.805 s 1.275 s 1.142 s 1.205 s1.205 s1.320 s247 ms18.68 %
Visual Readiness 1.967 s 2.067 s 2.100 s 2.133 s 1.934 s2.067 s2.040 s77 ms3.77 %
Visual Complete 95 1.133 s 1.766 s 1.233 s 1.100 s 1.166 s1.166 s1.280 s247 ms19.31 %
Visual Complete 99 2.067 s 2.700 s 2.166 s 1.967 s 2.100 s2.100 s2.200 s258 ms11.73 %
CPU metrics
Browser metrics
CPU benchmark score 76 ms 76 ms 79 ms 76 ms 78 ms76 ms77 ms1 ms1.64 %
Page metrics
DOM elements 8246 8246 8246 8246 82468246824600.00 %
Document height 30081 30081 30081 30081 30081300813008100.00 %
Total Requests 54 55 54 54 54545400.74 %
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 758.0 KB 761.3 KB 758.0 KB 758.0 KB 758.0 KB758.0 KB758.7 KB1.3 KB0.17 %
HTML Transfer Size 127.1 KB 127.3 KB 127.1 KB 127.1 KB 127.1 KB127.1 KB127.2 KB52 B0.04 %
JavaScript Transfer Size 310.7 KB 311.1 KB 310.7 KB 310.7 KB 310.7 KB310.7 KB310.8 KB168 B0.05 %
CSS Transfer Size 27.2 KB 27.3 KB 27.2 KB 27.2 KB 27.2 KB27.2 KB27.2 KB67 B0.24 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 2.0 KB 2.1 KB 2.0 KB 2.0 KB 2.0 KB2.0 KB2.0 KB28 B1.34 %
Plain Transfer Size 973 B 2.0 KB 973 B 973 B 973 B973 B1.2 KB418 B35.36 %
SVG Transfer Size 81.6 KB 82.9 KB 81.6 KB 81.6 KB 81.6 KB81.6 KB81.8 KB543 B0.65 %
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 %
Plain 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 54 55 54 54 54545400.74 %
First Party Total Transfer Size 758.0 KB 761.3 KB 758.0 KB 758.0 KB 758.0 KB758.0 KB758.7 KB1.3 KB0.17 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %